SKU: H55W2T2MF6 |  Mfg. Part: 66542-3  | UPC: 022697665423  | 
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Attwood 66542-3 Attwood 1" Stainless Steel Thru-hull Barbed Fitting

6 Available
Condition: New

$35.17  $47.48
Attwood Marine ATTWOOD MARINE
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Attwood 1" Stainless Steel Thru-Hull Barbed Fitting

Elevate your marine plumbing with Attwood's superior stainless steel thru-hull fittings, designed for longevity and performance. With a robust design intended to resist corrosion, these fittings offer an aesthetically pleasing and reliable solution for your boating needs.

Durable Construction:

  • Crafted from high-quality 316 stainless steel for exceptional strength and corrosion resistance.
  • Polished to a mirror finish for enhanced appearance and protection.
  • Designed to endure constant stress and hose movement.

Easy Installation:

  • Includes a silicone gasket for a reliable seal.
  • Features channeling under the flange to facilitate sealant application.
  • Equipped with gripping surfaces for simplified tightening, allowing installation from inside the hull.
  • Barbed tail ends ensure secure clamping for multiple hoses.

Specifications:

  • 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"
  • Installation hole saw size: 1-1/2"
  • Thread type: NPSM 1"
  • Maximum hull thickness: 5/8"

*Designed for installation above the waterline only.


  • High-quality 316 stainless steel construction
  • Mirror-polished finish for corrosion resistance
  • Easy installation with silicone gasket included
  • Design supports secure multiple hose connections
  • Perfect for use in tight spaces
  • Manufacturer:
  • Model Number:
  • ASIN:
  • Condition:
  • Weight:
  • Dimensions:
  • Updated:
  • Added:
  • Country of Origin:
  • Attwood Marine
  • 66542-3
  • B002FPC2JA
  • New
  • 0.6 lbs
  • 0 X 0 X 0
  • Nov 11, 2025
  • Apr 16, 2025
  • Thailand

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Attwood 66542-3 Attwood 1" Stainless Steel Thru-hull Barbed Fitting

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