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Attwood 1" Stainless Steel Thru-Hull Straight Barbed Fitting

MFG No: 66548-3
SKU No: GU3R5FZM6Y
UPC: 022697665485
MFG. Name: Attwood Marine
Available: 1
Condition: New

$36.62


1" Stainless Steel Thru-Hull Straight Barbed Fitting

Enhance your boating experience with Attwood's stainless steel thru-hull fittings. Designed for durability and a lifetime of corrosion resistance, these premium fittings outperform traditional plastic components.

Durable Stainless Steel Construction:

  • Made from certified Enhanced 316 Stainless Steel for superior strength and corrosion resistance.
  • Features a polished mirror finish on all visible surfaces, further protected by a passivation process.
  • Thick sidewalls are engineered to endure sustained stress and flexing.

Easy Installation Features:

  • Includes a silicone gasket for a reliable seal.
  • Designed with a channel under the flange to hold sealant, ensuring a straightforward installation.
  • Wrench flats or end notches facilitate tightening from inside the hull by one installer.
  • Barbed tail design allows for secure multi-clamp installations.

Thru-Hull Specifications:

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

*For above water line installation only.


  • Constructed from Enhanced 316 Stainless Steel
  • Polished mirror finish for aesthetic appeal
  • Sustainable and corrosion-resistant
  • Quick, secure installation options
  • Reliable seal with included silicone gasket

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Attwood 1" Stainless Steel Thru-Hull Straight Barbed Fitting

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