Attwood Marine Stainless Steel Thru-Hull Fitting, 1-1/2 Inch Inner Diameter - Durable, Corrosion-Resistant Marine Hardware

Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter

Polish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of the boat

Rugged Stainless Construction:

• Cast from certified Enhanced 316 Stainless Steel alloy for strength and lifetime corrosion-resistance
• All visible areas are polished to a mirror finish, then passivate each part for additional protection
• Thick steel sidewalls withstand continual stress and hose flexing

Faster, Simpler Installation:

• Each Thru-Hull is available with a new silicone gasket
• A channel under the flange holds a bead of sealant, making it easier to apply a trouble-free seal
• All models have wrench flats or an end notch to hold as a gripping surface; one installer can tighten all connections from inside the hull
• The barbed tail ends provide plenty of room to hold multiple clamps

Stainless Steel Straight Thru-Hulls, Barbed

• Standard Thread model has a full-length thread for thick hulls and easy tightening

Specifications:

• Hose size: (inch) 1-1/2" inner diameter
• Flange Diameter: (inch) 3"
• Thread O.D. (outside diameter): (inch) 1-7/8"
• Thread Length: (inch) 2-1/2"
• Barb Length: (inch) 1-1/4"
• Total Length: (inch) 4-1/8"
• Install Hole Saw Size: (inch) 2"
• Thread NPSM: (inch) 1-1/2"
• Max Hull Thickness: (inch) 1-7/8"

*Stainless Steel Thru-Hull Connectors are designed for installation above the water line only

Upgrade 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.

Installation 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.

Designed 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.

Built 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.

Features:

• Polished mirror finish with passivation for extra corrosion resistance

• Cast from certified Enhanced 316 stainless steel alloy for strength and durability

• Thick steel sidewalls withstand continual stress and hose flexing

• Includes silicone gasket for a secure, trouble-free seal

• Channel under flange holds sealant for easier installation

• Wrench flats or end notches for easy tightening from inside the hull

• Barbed tail ends accommodate multiple clamps for secure hose connection

• Full-length thread for thick hull installation

• Designed for above-waterline applications