{"title":"Thru-Hull Fittings","description":"\u003cp\u003eShop Thru-Hull Fittings for marine maintenance, repair, replacement, and upgrade projects. Compare available products by hose or fitting size, material, flow or pressure requirements, voltage, and application so you can narrow the options for your boat, engine, trailer, or onboard system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to choose:\u003c\/strong\u003e Confirm the manufacturer part number and application details before ordering, then review the product specifications for exact fit and installation requirements. For compatibility questions, contact Marine Parts Only with your equipment details and the part number you are replacing.\u003c\/p\u003e","products":[{"product_id":"attwood-marine-stainless-steel-thru-hull-short-straight-barbed-fitting-3-4-inner-diameter-for-marine-plumbing","title":"Attwood Marine Stainless Steel Thru-Hull Short Straight Barbed Fitting - 3\/4\" Inner Diameter for Marine Plumbing","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Short Straight Barbed - 3\/4\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eShort Thread is a more compact size, which allows installation near corners and in confined areas\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 3\/4\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 2-1\/2\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 1-1\/8\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 3\/4\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 5\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eEnhance your boat's durability and appearance with the Attwood Marine Stainless Steel Thru-Hull Short Straight Barbed Fitting, part number 66541-3. Crafted from certified Enhanced 316 stainless steel, this fitting offers superior strength and lifetime corrosion resistance, making it an ideal choice for marine applications where longevity is essential. Its polished mirror finish and passivation process provide a sleek, professional look while protecting against harsh water environments. Designed specifically for above-waterline installation, this fitting is built to withstand continual stress from hose flexing and environmental factors, ensuring reliable performance over time. The robust construction includes thick steel sidewalls that resist deformation, and the barbed tail ends feature ample space for multiple clamps, ensuring a secure connection that prevents leaks. Features such as a silicone gasket for faster installation, a sealant channel under the flange, and wrench flats or an end notch for easy tightening make this fitting user-friendly, even in confined spaces. Its compact size allows installation in tight corners or limited spaces, providing flexibility for various vessel configurations. The fitting's specifications include a 3\/4-inch inner diameter hose connection, a flange diameter of 1-7\/8 inches, and a total length of 2-1\/2 inches, with a 1-inch thread O.D. and a 1-inch barb length. Designed for quick, trouble-free installation, the Attwood Stainless Steel Thru-Hull is the perfect choice for boat owners seeking a durable, corrosion-resistant, and easy-to-install marine fitting. Note: This connector is intended solely for installation above the waterline, ensuring optimal performance and longevity in marine environments.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eConstructed from certified Enhanced 316 stainless steel for maximum strength and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMirror-polished finish with passivation for enhanced durability and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eThick sidewalls designed to withstand continuous stress and hose flexing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a silicone gasket for quicker, more reliable installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSealant channel under flange simplifies applying a secure, leak-proof seal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrench flats or end notch allow for easy tightening from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail ends provide ample space for multiple clamps, ensuring a secure fit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompact short thread design suitable for tight spaces and corners\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned exclusively for above-waterline installation to ensure optimal performance\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253873832025,"sku":"98083","price":44.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98083XL.jpg?v=1785360840"},{"product_id":"attwood-marine-stainless-steel-thru-hull-short-straight-barbed-fitting-1-1-2-inner-diameter-corrosion-resistant-marine-hardware","title":"Attwood Marine Stainless Steel Thru-Hull Short Straight Barbed Fitting – 1-1\/2\" Inner Diameter, Corrosion-Resistant Marine Hardware","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Short Straight Barbed - 1-1\/2\" Inner Diameter \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eShort Thread is a more compact size, which allows installation near corners and in confined areas\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 1-1\/2\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 3\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 3-1\/8\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 2\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 5\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eElevate your boat’s plumbing system with the durable and corrosion-resistant Attwood Marine Stainless Steel Thru-Hull Short Straight Barbed Fitting. Crafted from certified Enhanced 316 stainless steel, this high-quality fitting offers exceptional strength and lifetime resistance to marine corrosion, ensuring reliable performance in demanding conditions. Its polished mirror finish and passivation process not only enhance aesthetic appeal but also provide added protection against the harsh marine environment, making it a smart choice for longevity and maintenance-free operation.\u003cbr\u003eDesigned for ease of installation, this thru-hull features a silicone gasket for a tight seal and a channel under the flange that holds a bead of sealant, simplifying the sealing process. The inclusion of wrench flats or an end notch allows for secure grip and one-person tightening from inside the hull, saving time and effort during installation. The barbed tail ends accommodate multiple hose clamps, ensuring a secure connection that withstands hose flexing and stress in marine applications.\u003cbr\u003eThe short thread design makes it ideal for installation in tight spaces near corners or confined areas, providing versatility for various boat configurations. With an inner diameter of 1-1\/2 inches and a flange diameter of 3 inches, this fitting is suitable for a variety of marine plumbing needs. Please note, these connectors are intended for installation above the water line for optimal performance. Trust Attwood Marine’s quality and craftsmanship to keep your vessel running smoothly and looking sharp for years to come. \u003c!--- prop 65: This product may contain chemicals known to the State of California to cause cancer and reproductive toxicity. --\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eRugged construction: Made from certified Enhanced 316 stainless steel for strength and lifetime corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePolished finish: Mirror-polished and passivated for enhanced durability and appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy installation: Silicone gasket, sealant channel, and wrench flats for quick, trouble-free setup\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail: Facilitates secure hose attachment with room for multiple clamps\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompact size: Short thread design suitable for tight spaces near corners and confined areas\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eVersatile fit: 1-1\/2\" inner diameter with a 3\" flange diameter, ideal for marine plumbing above the water line\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253874651225,"sku":"98087","price":74.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98087XL.jpg?v=1785360884"},{"product_id":"attwood-marine-stainless-steel-thru-hull-fitting-5-8-inch-inner-diameter-straight-barbed-model-66546-3","title":"Attwood Marine Stainless Steel Thru-Hull Fitting - 5\/8 inch Inner Diameter, Straight Barbed, Model 66546-3","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Standard Straight Barbed - 5\/8\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eStandard Thread model has a full-length thread for thick hulls and easy tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 5\/8\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 2\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 3-3\/4\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 1-1\/8\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 3\/4\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-1\/16\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eUpgrade your boat's plumbing with the Attwood Marine Stainless Steel Thru-Hull Fitting, model 66546-3, designed for durability and reliable performance. Crafted from certified Enhanced 316 stainless steel, this fitting offers exceptional strength and corrosion resistance, ensuring it withstands harsh marine environments for the lifetime of your vessel. The polished mirror finish on all visible surfaces adds a sleek, professional appearance while the passivation process enhances its longevity. Featuring thick steel sidewalls, this fitting can endure continual stress and hose flexing, making it an ideal choice for demanding marine applications. Its standard straight barb and full-length thread facilitate easy installation, especially on thicker hulls, with the added convenience of a silicone gasket for a secure seal. A channel beneath the flange holds sealant, simplifying the sealing process and reducing installation time. Equipped with wrench flats or end notches, the fitting allows for straightforward tightening from inside the hull, even in tight spaces. The barb end accommodates multiple clamps, providing a secure connection to your hoses. Designed for installation above the water line only, this fitting ensures a reliable, long-lasting connection for your boat’s plumbing system. The model features a 1-7\/8 inch flange diameter, 1 inch thread outside diameter, and a 2-inch thread length, suitable for hull thicknesses up to 1-1\/16 inches. The 5\/8 inch inner diameter hose size makes it compatible with standard marine hoses, while the 1-1\/4 inch barb length offers ample room for secure clamping. Whether replacing an old fitting or installing a new system, the Attwood Marine Stainless Steel Thru-Hull provides the durability, ease of installation, and corrosion resistance needed for a trouble-free boating experience. This high-quality component is essential for anyone seeking a dependable, long-term solution for hull penetrations, combining performance with a polished appearance to complement any vessel’s aesthetic.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eConstructed from certified Enhanced 316 stainless steel for maximum strength and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePolished mirror finish with passivation for enhanced durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a silicone gasket for a secure, trouble-free installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChannel under flange holds sealant for an easier sealing process\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrench flats or end notches allow for easy tightening from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail accommodates multiple clamps for secure hose connection\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFull-length thread designed for thick hulls and straightforward tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSuitable for installation above water line only\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253875535961,"sku":"98088","price":44.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98088XL.jpg?v=1785360920"},{"product_id":"attwood-marine-stainless-steel-thru-hull-fitting-with-barbed-connection-3-4-inch-inner-diameter","title":"Attwood Marine Stainless Steel Thru-Hull Fitting with Barbed Connection - 3\/4-Inch Inner Diameter","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Standard Straight Barbed - 3\/4\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eStandard Thread model has a full-length thread for thick hulls and easy tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 3\/4\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 2\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 3-3\/4\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 1-1\/8\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 3\/4\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-5\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eUpgrade your boat’s plumbing system with the Attwood Marine Stainless Steel Thru-Hull Fitting, Part Number 66547-3. Crafted from certified Enhanced 316 stainless steel, this durable fitting offers exceptional corrosion resistance and a polished mirror finish, ensuring both longevity and a sleek appearance that complements any vessel. Designed for above-waterline installations, it features a 3\/4-inch inner diameter hose connection, making it ideal for a variety of marine applications where reliable, long-lasting performance is essential. The thick steel sidewalls provide added strength to withstand continual stress and hose flexing, ensuring a secure and durable connection over time. Its full-length threaded design allows for easy tightening even in thicker hulls, while the included silicone gasket and sealant channel facilitate a trouble-free installation process. The wrench flats or end notches provide a firm grip for installers, enabling complete tightening from inside the hull without the need for specialized tools. The barbed tail ends are designed to hold multiple clamps, ensuring a secure fit and minimizing the risk of leaks. With a flange diameter of 1-7\/8 inches and an overall length of approximately 3-3\/4 inches, this fitting is suitable for hulls up to 1-5\/8 inches thick, making it versatile for various vessel designs. Please note that these stainless steel thru-hulls are intended for above-waterline use only, adhering to safety and performance standards. Whether upgrading existing fittings or installing new systems, Attwood’s stainless steel thru-hull provides a combination of strength, corrosion resistance, and ease of installation that boat owners and marine professionals trust for long-term reliability and a polished look.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eRugged stainless steel construction: Cast from certified Enhanced 316 stainless steel alloy for strength and lifetime corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePolished mirror finish: All visible areas are polished and passivated for additional protection\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDurable sidewalls: Thick steel withstands continual stress and hose flexing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy installation: Includes silicone gasket and a sealant channel for trouble-free sealing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConvenient grip: Wrench flats or end notches allow for secure tightening from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail ends: Provide ample room for multiple clamps, ensuring a secure connection\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFull-length thread: Designed for thick hulls and straightforward tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eVersatile application: Suitable for hulls up to 1-5\/8 inches thick\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAbove-waterline use only: Complies with safety standards for marine environments\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253876617305,"sku":"98089","price":45.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98089XL.jpg?v=1785360972"},{"product_id":"attwood-marine-stainless-steel-thru-hull-fitting-1-inch-inner-diameter-standard-straight-barbed-durable-marine-hardware","title":"Attwood Marine Stainless Steel Thru-Hull Fitting, 1-Inch Inner Diameter, Standard Straight Barbed | Durable Marine Hardware","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Standard Straight Barbed - 1\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eStandard Thread model has a full-length thread for thick hulls and easy tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 1\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 2-1\/4\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1-3\/8\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 2-1\/4\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 3-7\/8\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-3\/4\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eEnhance your boat's reliability and appearance with the Attwood Marine Stainless Steel Thru-Hull Fitting, part number 66548-3, designed for seamless installation and long-lasting performance. Crafted from certified Enhanced 316 stainless steel, this fitting offers superior strength and corrosion resistance, ensuring it withstands harsh marine environments for years to come. The mirror-polished finish not only provides a sleek, professional look but also adds an extra layer of protection through passivation, making it an ideal choice for demanding boating applications. Its thick steel sidewalls are engineered to endure continuous stress and hose flexing, providing peace of mind during extended voyages.\u003c\/p\u003e\u003cp\u003eThis model features a user-friendly design that simplifies installation. It comes with a silicone gasket for a tight seal and includes a channel underneath the flange to hold sealant, reducing the risk of leaks. The wrench flats or end notches allow easy gripping and tightening from inside the hull, enabling a single installer to complete the task efficiently. The barbed tail ends are designed with ample room for multiple clamps, ensuring a secure connection to your hoses. The standard thread model boasts a full-length thread suited for thicker hulls, making it versatile for various vessel configurations.\u003c\/p\u003e\u003cp\u003eIdeal for above-waterline installations, the Attwood Stainless Steel Thru-Hull is perfect for marine professionals and DIY enthusiasts seeking durable, corrosion-resistant fittings that combine ease of installation with premium quality. The fitting's specifications support a 1-inch inner diameter hose, with a flange diameter of 2-1\/4 inches and a total length of just under 4 inches, fitting comfortably into typical marine hulls. Designed to accommodate hull thicknesses up to 1-3\/4 inches, this fitting ensures a secure, reliable connection every time, helping keep your boat watertight and operating smoothly in all conditions.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePolished stainless steel construction for durability and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFull-length thread for easy tightening into thick hulls\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes silicone gasket for a secure seal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChannel under flange designed for sealant application\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrench flats or end notches for easy installation from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail ends with ample room for multiple clamps\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for above-waterline installation only\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253877600345,"sku":"98090","price":48.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98090XL.jpg?v=1785361016"},{"product_id":"attwood-marine-stainless-steel-thru-hull-fitting-1-1-8-inner-diameter-standard-straight-barbed","title":"Attwood Marine Stainless Steel Thru-Hull Fitting - 1-1\/8\" Inner Diameter, Standard Straight Barbed","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Standard Straight Barbed - 1-1\/8\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eStandard Thread model has a full-length thread for thick hulls and easy tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 1-1\/8\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 2-1\/4\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1-3\/8\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 2-3\/8\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 3-7\/8\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-3\/4\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eEnhance your boat's durability and appearance with the Attwood Marine Part 66549-3 stainless steel thru-hull fitting. Crafted from certified Enhanced 316 stainless steel alloy, this fitting offers superior strength and lifetime corrosion resistance, making it a reliable choice for marine applications. The polished mirror finish on all visible areas not only provides a sleek look but also ensures added protection through passivation, guarding against the harsh marine environment. Designed with thick steel sidewalls, this thru-hull withstands continual stress and hose flexing, maintaining a secure connection over time. Installation is faster and simpler thanks to features like a silicone gasket for a tight seal, a channel under the flange for sealant application, and wrench flats or an end notch for easy gripping during tightening. The barbed tail ends accommodate multiple clamps, ensuring a secure fit for your hose connections. The standard thread model features a full-length thread suitable for thicker hulls, facilitating ease of installation. This thru-hull is intended for above-waterline use only, adhering to safety standards. Its specifications include a 1-1\/8\" inner diameter hose size, a 2-1\/4\" flange diameter, and a total length of approximately 3-7\/8\". The design also includes a 1-1\/4\" barb length for versatile hose attachment and a 1-1\/4\" install hole saw size. Engineered for durability and ease of installation, the Attwood Stainless Steel Thru-Hull Part 66549-3 is an excellent choice for marine professionals and boat enthusiasts seeking long-lasting, corrosion-resistant fittings that combine form and function seamlessly.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePolished mirror finish on all visible areas with passivation for enhanced corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCast from certified Enhanced 316 stainless steel alloy for strength and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eThick steel sidewalls designed to withstand continuous stress and hose flexing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes silicone gasket for a secure, trouble-free seal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChannel under flange for easy application of sealant\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrench flats or end notch for simple tightening from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail ends accommodate multiple clamps for secure hose connections\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFull-length thread model suitable for thick hulls\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for installation above the waterline for safety and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253878190169,"sku":"98091","price":54.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98091XL.jpg?v=1785361051"},{"product_id":"attwood-marine-stainless-steel-thru-hull-fitting-1-1-2-inch-inner-diameter-durable-corrosion-resistant-marine-hardware","title":"Attwood Marine Stainless Steel Thru-Hull Fitting, 1-1\/2 Inch Inner Diameter - Durable, Corrosion-Resistant Marine Hardware","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Thru-Hull Standard Straight Barbed - 1-1\/2\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Thru-Hull is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Straight Thru-Hulls, Barbed\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eStandard Thread model has a full-length thread for thick hulls and easy tightening\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHose size: (inch) 1-1\/2\" inner diameter\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 3\"\u003c\/li\u003e\n\u003cli\u003eThread O.D. (outside diameter): (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eThread Length: (inch) 2-1\/2\"\u003c\/li\u003e\n\u003cli\u003eBarb Length: (inch) 1-1\/4\"\u003c\/li\u003e\n\u003cli\u003eTotal Length: (inch) 4-1\/8\"\u003c\/li\u003e\n\u003cli\u003eInstall Hole Saw Size: (inch) 2\"\u003c\/li\u003e\n\u003cli\u003eThread NPSM: (inch) 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-7\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eUpgrade your boat's plumbing system with the Attwood Marine Stainless Steel Thru-Hull Fitting, Part Number 66551-3. Crafted from certified Enhanced 316 stainless steel, this fitting offers exceptional strength and lifetime corrosion resistance, making it an ideal choice for demanding marine environments. The mirror-polished finish and passivation process ensure a sleek appearance and added durability, maintaining your boat's aesthetic appeal while providing reliable performance. Designed for above-waterline installations, this thru-hull is built to withstand continual stress and hose flexing, making it a durable solution for your marine plumbing needs. Its thick steel sidewalls enhance structural integrity, ensuring long-lasting service and peace of mind.\u003c\/p\u003e\u003cp\u003eInstallation is simplified with features like a silicone gasket for a secure seal and a channel under the flange that holds a bead of sealant, reducing sealant mess and ensuring a trouble-free installation. The wrench flats or end notches provide a firm grip for easy tightening, allowing a single installer to complete the job efficiently from inside the hull. The barbed tail ends accommodate multiple clamps, ensuring a secure connection to your hoses. Whether you're replacing an existing fitting or installing a new system, this thru-hull provides a reliable, corrosion-resistant connection that will last for years.\u003c\/p\u003e\u003cp\u003eDesigned with practicality in mind, this standard thread model features a full-length thread to accommodate thick hulls and facilitate easy tightening. It has a flange diameter of 3 inches, an outside thread diameter of 1-7\/8 inches, and a total length of just over 4 inches. The barb length measures 1-1\/4 inches, providing ample room for multiple clamps to secure hoses firmly. The fitting requires a 2-inch install hole saw, making it compatible with most marine hulls up to 1-7\/8 inches thick. Please note that these stainless steel thru-hulls are intended for installation above the waterline only, ensuring optimal performance and longevity.\u003c\/p\u003e\u003cp\u003eBuilt by Attwood Marine, a trusted name in marine hardware, this stainless steel thru-hull is the perfect combination of durability, ease of installation, and corrosion resistance. Whether you're outfitting a new vessel or replacing worn-out fittings, this product guarantees a reliable, professional-grade connection that will withstand the rigors of marine life while enhancing your boat’s overall appearance and functionality.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePolished mirror finish with passivation for extra corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCast from certified Enhanced 316 stainless steel alloy for strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes silicone gasket for a secure, trouble-free seal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChannel under flange holds sealant for easier installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrench flats or end notches for easy tightening from inside the hull\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBarbed tail ends accommodate multiple clamps for secure hose connection\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFull-length thread for thick hull installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for above-waterline applications\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253879205977,"sku":"98093","price":72.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98093XL.jpg?v=1785361087"},{"product_id":"attwood-marine-stainless-steel-scupper-valve-barbed-1-1-2-hose-size-for-marine-applications","title":"Attwood Marine Stainless Steel Scupper Valve Barbed - 1-1\/2\" Hose Size for Marine Applications","description":"\u003cp\u003e\u003cstrong\u003eStainless Steel Scupper Valve Barbed - 1-1\/2\" Hose Size\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003ePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRugged Stainless Construction:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance\u003c\/li\u003e\n\u003cli\u003eAll visible areas are polished to a mirror finish, then passivate each part for additional protection\u003c\/li\u003e\n\u003cli\u003eThick steel sidewalls withstand continual stress and hose flexing\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFaster, Simpler Installation:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEach Scupper Valve is available with a new silicone gasket\u003c\/li\u003e\n\u003cli\u003eA channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal\u003c\/li\u003e\n\u003cli\u003eAll models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull\u003c\/li\u003e\n\u003cli\u003eThe barbed tail ends provide plenty of room to hold multiple clamps\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eStainless Steel Scupper Valves, Barbed:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThe Scupper Flap is tough neoprene rubber with a molded V that\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253879894105,"sku":"98094","price":110.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98094XL.jpg?v=1785361125"},{"product_id":"attwood-marine-white-plastic-90-degree-thru-hull-connector-3-4-inner-diameter-for-tight-marine-installations","title":"Attwood Marine White Plastic 90 Degree Thru-Hull Connector - 3\/4\" Inner Diameter for Tight Marine Installations","description":"\u003cp\u003e\u003cstrong\u003eWhite Plastic 90 Degree Thru-Hull Connector - 3\/4\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e90 Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits Hose Size: (inch) 3\/4\"inner diameter\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 1-1\/2\"\u003c\/li\u003e\n\u003cli\u003eInstallation Hole Size: (inch) 1\"\u003c\/li\u003e\n\u003cli\u003eDrain Plug: (inch) 1\/2\"\u003c\/li\u003e\n\u003cli\u003eColor: White\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Plastic Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Attwood Marine White Plastic 90 Degree Thru-Hull Connector (Part Number 3877-3) offers a reliable and space-efficient solution for marine plumbing applications. Designed with a 3\/4-inch inner diameter, this connector is ideal for tight installations such as livewell overflow drains, where space constraints are a concern. Its 90-degree angled design provides a smooth transition that minimizes hose kinking, ensuring efficient water flow and reducing stress on hoses and fittings. Crafted from durable, corrosion-resistant plastic, this thru-hull connector is built to withstand the harsh marine environment while maintaining a clean, white appearance for a neat finish. \u003c\/p\u003e\u003cp\u003eThis connector features a flange diameter of 1-1\/2 inches and requires a 1-inch installation hole, making it compatible with standard marine fittings and applications. The maximum hull thickness it accommodates is 1 inch, providing versatility for various boat hulls. The drain plug size is 1\/2 inch, allowing for secure sealing and easy maintenance. Please note that this plastic thru-hull connector is designed for installation above the water line only, aligning with safety and performance standards. Its straightforward installation process makes it suitable for both professional installers and DIY boat owners seeking a reliable, corrosion-proof connection for their marine plumbing needs.\u003c\/p\u003e\u003cp\u003eWhether you're outfitting a new vessel or replacing an existing fitting, the Attwood Marine 90 Degree Thru-Hull Connector guarantees durability and performance in demanding marine environments. Its high-quality construction and precise engineering ensure a tight, leak-free fit, helping to prevent water intrusion and maintain the integrity of your boat's plumbing system. Trust Attwood Marine for dependable marine fittings that combine functionality, longevity, and ease of installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eAngled design minimizes hose kinking and allows for tight installations\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed from durable, corrosion-resistant plastic suitable for marine environments\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFits 3\/4-inch inner diameter hoses with a flange diameter of 1-1\/2 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with hull thickness up to 1 inch and requires a 1-inch installation hole\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for above water line installation to ensure safety and compliance\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eTruck Freight: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOversized: No\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Attwood Marine","offers":[{"title":"Default Title","offer_id":44253880320089,"sku":"98107","price":26.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/1818\/2489\/files\/98107XL.jpg?v=1785361149"},{"product_id":"attwood-marine-white-plastic-90-degree-thru-hull-connector-1-1-8-inner-diameter","title":"Attwood Marine White Plastic 90 Degree Thru-Hull Connector - 1-1\/8\" Inner Diameter","description":"\u003cp\u003e\u003cstrong\u003eWhite Plastic 90 Degree Thru-Hull Connector - 1-1\/8\" Inner Diameter\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e90 Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFits Hose Size: (inch) 1-1\/8\"inner diameter\u003c\/li\u003e\n\u003cli\u003eMax Hull Thickness: (inch) 1-7\/8\"\u003c\/li\u003e\n\u003cli\u003eFlange Diameter: (inch) 2-7\/16\"\u003c\/li\u003e\n\u003cli\u003eInstallation Hole Size: (inch) 1-5\/16\"\u003c\/li\u003e\n\u003cli\u003eDrain Plug: (inch) 7\/8\"\u003c\/li\u003e\n\u003cli\u003eColor: White\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e*Plastic Thru-Hull Connectors are designed for installation above the water line only\u003c\/p\u003e \u003c!--- cis2:m2lsl5xp ---\u003e\n\u003cp\u003eThe Attwood Marine White Plastic 90 Degree Thru-Hull Connector with part number 3879-3 is designed for reliable and secure boat plumbing applications. This high-quality connector features a 1-1\/8-inch inner diameter, making it suitable for various marine drain and overflow setups. Its angled 90-degree design helps facilitate installations in tight spaces, such as livewell overflow drains, while preventing hose kinking and ensuring consistent water flow. The durable white plastic construction ensures longevity and resistance to marine environments, providing a maintenance-free solution for your boat's plumbing system. The flange diameter of 2-7\/16 inches and installation hole size of 1-5\/16 inches make it straightforward to install, with compatibility for hull thicknesses up to 1-7\/8 inches. This thru-hull connector is intended for above-waterline installation only, ensuring optimal performance and safety. Whether upgrading existing plumbing or installing new systems, the Attwood Marine Thru-Hull Connector offers a dependable, easy-to-install solution that meets the demands of marine applications. Please note that this product complies with PROP 65 regulations, ensuring safety and environmental standards are met. 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