Stainless Steel 90° Thru-Hulls, Barbed

Thru-Hulls by Attwood
Regular price $ 45.27

Lifetime Warranty

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 Solicone 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

 Caution: Thru-Hull connectors are designed for installation above the water line only.

A Hose Size B Flange Dia. C Thread O.D. D Thread Length E  Barb Length F  Total Length Install. Hole Saw Size Thread NPSM Max Hull Thick. Bulk Without Gasket Bulk With Gasket Aftermarket Packaging*
3/4" I.D. 1-7/8" 1" 1-1/2" 3/4" 3-3/8" 1-1/4" 3/4" 1-1/16" 66577-1 66577G1  -
1-1/8" I.D. 2-1/4" 1-3/8" 1-7/8" 3/4" 4-3/8" 1-5/8" 1" 1-1/4" 66579-1 66579G1

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