Thru-Hull Fittings

Attwood Marine Thru Hull SS 1" 66548-3Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Lifetime warranty.

1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with Nut Features: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainless Steel models available

Sea-Dog Line Thru-Hull Fitting 3/4" 520750-1Injection molded polypropylene.

Seachoice Thru Hull W/SS Cover-1 1/8 90 50-18561 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Seachoice Thru-Hull Conn-White Plas-1 Nut 50-18141 One nut applicationDesigned for use with one back nut, unlike old style 90°, thru-hull with both front and back nutMade of hi-impact white plasticDesigned for easier application where hose is...

Attwood Marine Thru Hull 1-1/2" White 3875-3Molded of rugged plastic. Will not rust, corrode, discolor or contribute to electrolysis. Design eliminates hull streaking and allows countersinking wherever a flush fit is required. White.

1-1/4" NPS NPT Combo XL Bronze Thru Hull Features: Extra long NPSM / NPT combination thread C83600 Bronze Sizes from 3/4" to 2" Available with or without nut Stainless Steel models available

3" NPS NPT Combo Bronze Thru Hull Features: NPSM / NPT combination thread C83600 Bronze Sizes from 1/2" to 5" UL Listed 647B Available with (-W) or without nut (-L) BSPP and Stainless Steel models available

1-1/4" BSPP Bronze Thru Hull Features: British Standard Pipe Parallel (BSPP) Thread C83600 Bronze Sizes from 1/2" to 4" UL Listed 647B Available with or without nut

Attwood Marine Thru-Hull Con. 90 Deg 3/4" Wh 38773Molded of rugged plastic. Will not rust, corrode, discolor or contribute to electrolysis. Design eliminates hull streaking and allows countersinking wherever a flush fit is required. White.

1-1/2" 90 Degree Hose Thru-Hull Fitting Features:90 Degree Barb#316 Stainless Steel Thru Hull with Bronze Hose ConnectionUL Listed 647B

2" NPS NPT Combo High Speed Pickup Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Sizes from 3/4" to 3" Available with or without nut BSPP models...

Perko 3/4 Bronze Thru Hull with Nut 0322Dp5PlbCast bronze. Flange is machined to fit hull and grooved to retain bedding compound. Neck is threaded to approximately 3/8" from flange. Includes flange nut. UL Listed.

Perko 3/4 Thru Hull Connection Bulk 0328Dp5Molded white plastic with broad flange. For use with hose. Not recommended for use below waterline. UL Listed

Sea-Dog Line Thru Hull-1-1/8 520770Injection molded polypropylene.

Seachoice Thru Hull W/SS Cover-3/4 90Dg 50-18541 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Seachoice Thru Hull W/SS Cover-3/4 Strt 50-18441 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Attwood Marine Thru Hull SS 1-1/4" 66550-3Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Lifetime warranty.

Attwood Marine Thru Hull SS 1-1/8" Short 66543-3Cast from 316 stainless steel. A channel under the flange holds a bead of sealant. All models have wrench flats or an end notch. Designed for installation above the water line only. Lifetime warranty.

1-1/2" NPS NPT Combo High Speed Pickup Features: Designed for increased flow compared to standard Thru Hulls and with less drag NPSM / NPT combination thread C83600 Bronze Sizes from 3/4" to 3" Available with or without nut BSPP models...