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 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 availab  

Seachoice Thru Hull W/SS Cover-1 1/4 St 50-18471 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Seachoice Thru-Hull Conn-White Plas-3/4 50-18051 Per ABYC "Safety Standards for Small Craft"Molded plastic with broad flange • Not recommended for use below the waterline.

1-1/4" 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

1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with Nut Features: NPSM / NPT combination thread #316 Stainless Steel Sizes from 1/2" to 3" UL Listed 647B BSPP and Stainless Steel models available

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

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

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...

2" 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

Johnson Pump 3/4 Thru Hull 90Deg. 75035-00 Fittings are molded of tough acetal resin so they will not rust, corrode, discolor nor are they susceptible to electrolysis.

1" NPS NPT Combo Flush Thru Hull Features: Machined flat face for flush mount or dripless applications NPSM / NPT combination thread C84400 Bronze Sizes from 1/2" to 5" Available with or without nut

Perko 1-1/8 Thru Hull Connect Bulk 0328Dp6A Molded white plastic with broad flange. For use with hose. Not recommended for use below waterline. UL Listed

Seachoice Thru Hull W/SS Cover-1 1/4 90 50-18571 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Seachoice Thru Hull W/SS Cover-5/8 Strt 50-18431 Molded from polypropylene with glass fiber for strengthNot recommended for use below the waterline.

Attwood Marine Thru Hull SS 1-1/8" Short 66543-3 Cast 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 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.