ATTWOOD–Stainless Steel Straight Thru-Hull Fittings, Barbed
1 1/8" Inner Diameter
1 3/4" Hull Thickness
1 3/8" Outer Diameter
2 1/2" Length
Polish your image with these beautiful, durable stainless steel fittings. Each Thru-Hull and Scupper Valve is available with a new silicone gasket and are backed by Attwood's trusted Lifetime Warranty! Why specify plastic parts when these fittings will last the life of the boat?
Rugged Stainless Construction
- Cast from certified enhanced #316 Stainless Steel allow for strength and lifetime corrosion-resistance
- We polish all visible areas to a mirror finish, then each part through a passivation for additional protection
- Thick steel sidewalls withstand continual stress and hose flexing
Solid Silicone Gasket
- Gasket is dimensionally stable--will not deteriorate or shrink over time
- Excellent resistance to UV & weather-aging
- Watertight, fool-proof, one-piece seal
- Eliminates the need to form and apply sealant or caulk
- No more chemicals, solvent-soaked rags, or cleanup
- More than pays for itself in saved labor and cleanup time
- Guaranteed good looks because the perfect fit and concealment is built in the gasket
Faster, Simpler Installation
- 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
- Barbed tail ends provide plenty of room to hold multiple clamps
Caution: Thru-Hull connectors are designed for installation above the water line only.
- Hose Size 1-1/8" I.D.
- Flage Dia. 2-1/4"
- Thread O.D. 1-3/8"
- Thresd Length 1-1/4"
- Barb Length 1"
- Total Length 2-1/2"
- Install Hole Saw Size 1-1/2"
- Thread NP SM 1"
- Max Hull Thick. (Short 5/8") (Standard 1-3/4")
- Bulk without gasket 66549-1
- Bulk with gasket 66549G1
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