Attwood’s Stainless Steel Thru-Hull Standard Straight Barbed is a robust above-water-line fitting for marine plumbing with a 1" inner diameter. Cast from enhanced 316 stainless steel, it delivers dependable strength, corrosion resistance, and a bright mirror-polished finish that stays sharp in marine environments.
-
Material: Enhanced 316 stainless steel for lasting strength and corrosion resistance.
-
Finish: Mirror-polished surface with passivation for added protection and a refined appearance.
-
Construction: Thick sidewalls withstand continual stress and hose flexing; barbed tail ends provide secure hose clamping.
-
Sealing and installation: Includes silicone gasket option and a sealant bead channel under the flange for a reliable seal; full-length thread accommodates thicker hulls.
-
Grip and installation from inside: Wrench flats or end notch offer gripping surfaces so connections can be tightened from inside the hull.
-
Dimensions and hose compatibility: 1" inner diameter hose; 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".
-
Installation note: Attwood Thru-Hull connectors are designed for installation above the water line only.
-
Brand / Model: Attwood Marine, model 66548-3, UPC 022697665485.
Designed for reliable above-water-line plumbing on boats, this thru-hull offers a secure, long-lasting solution thanks to 316 stainless steel and a mirror-polished finish that resists corrosion and tarnish. The gasket option and sealant bead channel help ensure a dependable seal in demanding marine environments, while the full-length thread accommodates thicker hulls. Tighten connections from inside the hull using wrench flats or the end notch for a straightforward install. With a 1" inner diameter hose, compatible dimensions, and a sturdy barbed tail for secure hose clamping, this Attwood thru-hull is built to perform in challenging marine conditions and during regular hose flexing.
