Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter

Upgrade your boat’s plumbing with the Attwood Stainless Steel Thru-Hull Short Straight Barbed fitting, built for durability and reliable performance. Cast from certified Enhanced 316 stainless steel, this rugged thru-hull delivers lifetime corrosion resistance, with every visible surface polished to a mirror finish and passivated for extra protection. It’s the long-lasting choice when plastic parts simply won’t stand up to the dockside or offshore environment.

Designed for tight installations without sacrificing strength, this short-thread, barbed thru-hull is ideal for corners and confined spaces. It features a compact profile that’s easy to fit where room is at a premium, while still providing ample room on the barbed tail for multiple hose clamps. The construction includes practical features that make installation straightforward and durable from inside the hull.

• Hose size: 1" inner diameter
• Compact Short Thread design for tight spaces and near corners
• Flange Diameter: 2-1/4"
• Thread O.D.: 1-3/8"
• Thread Length: 1-1/8"
• Barb Length: 1"
• Total Length: 2-1/2"
• Install Hole Saw Size: 1-1/2"
• Thread NPSM: 1"
• Max Hull Thickness: 5/8"
• New silicone gasket improves installation speed and reliability
• A channel under the flange holds a bead of sealant for a trouble-free seal
• Wrench flats or end notch provide gripping surfaces; most connections tighten from inside the hull
• Barbed tail ends accommodate multiple clamps for secure hose retention
• Designed for installation above the water line only

Specifications & Compatibility

• Material: Stainless steel (Enhanced 316)
• Hose size: 1" inner diameter
• Flange Diameter: 2-1/4"
• Thread O.D.: 1-3/8"
• Thread Length: 1-1/8"
• Barb Length: 1"
• Total Length: 2-1/2"
• Install Hole Saw Size: 1-1/2"
• Thread NPSM: 1"
• Max Hull Thickness: 5/8"
• Manufacturer: Attwood Marine
• Manufacturer Part No: 66542-3