Attwood Marine Stainless Steel Thru-Hull Fitting with Barbed Connection - 3/4-Inch Inner Diameter

Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" 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) 3/4" inner diameter
• Flange Diameter: (inch) 1-7/8"
• Thread O.D. (outside diameter): (inch) 1"
• Thread Length: (inch) 2"
• Barb Length: (inch) 1-1/4"
• Total Length: (inch) 3-3/4"
• Install Hole Saw Size: (inch) 1-1/8"
• Thread NPSM: (inch) 3/4"
• Max Hull Thickness: (inch) 1-5/8"

*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 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.

Features:

• Rugged stainless steel construction: Cast from certified Enhanced 316 stainless steel alloy for strength and lifetime corrosion resistance

• Polished mirror finish: All visible areas are polished and passivated for additional protection

• Durable sidewalls: Thick steel withstands continual stress and hose flexing

• Easy installation: Includes silicone gasket and a sealant channel for trouble-free sealing

• Convenient grip: Wrench flats or end notches allow for secure tightening from inside the hull

• Barbed tail ends: Provide ample room for multiple clamps, ensuring a secure connection

• Full-length thread: Designed for thick hulls and straightforward tightening

• Versatile application: Suitable for hulls up to 1-5/8 inches thick

• Above-waterline use only: Complies with safety standards for marine environments