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Thru-Hull Fittings
Product Availability Notice:
Not all products shown online are stocked at our retail location. Many items may be available from our warehouse or suppliers and can be ordered for you. Availability and shipping times vary.
If calling to check availability or price, please have the manufacturer's part number (MPN) ready. We are unable to search our product database by description alone.
Not all products shown online are stocked at our retail location. Many items may be available from our warehouse or suppliers and can be ordered for you. Availability and shipping times vary.
If calling to check availability or price, please have the manufacturer's part number (MPN) ready. We are unable to search our product database by description alone.
Sub Categories
![GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1\/8" [HTH-1125]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/16057/20184/75218XL__43789.1677991279.jpg?c=1 "GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1\/8\" [HTH-1125]")
GROCO
GROCO Bronze Hose Barb Thru-Hull Fitting - 1-1/8" [HTH-1125]
Bronze Hose Barb Thru-Hull Fitting - 1-1/8" Features:NPS Thread With Hose ConnectionC83600 BronzeUL Listed 647B Specifications:Hose Size: 1-1/8"Material: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0...
![GROCO Bronze Hose Barb Thru-Hull Fitting - 1" [HTH-1000]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/16056/20183/75217XL__40433.1677991277.jpg?c=1 "GROCO Bronze Hose Barb Thru-Hull Fitting - 1\" [HTH-1000]")
GROCO
GROCO Bronze Hose Barb Thru-Hull Fitting - 1" [HTH-1000]
Bronze Hose Barb Thru-Hull Fitting - 1" Features:NPS Thread With Hose ConnectionC83600 BronzeUL Listed 647B Specifications:Hose Size: 1"Material: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.7...
![GROCO Bronze Hose Barb Thru-Hull Fitting - 3\/4" [HTH-750]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/16055/20182/75216XL__20967.1677991275.jpg?c=1 "GROCO Bronze Hose Barb Thru-Hull Fitting - 3\/4\" [HTH-750]")
GROCO
GROCO Bronze Hose Barb Thru-Hull Fitting - 3/4" [HTH-750]
Bronze Hose Barb Thru-Hull Fitting - 3/4" Features:NPS Thread With Hose ConnectionC83600 BronzeUL Listed 647B Specifications:Hose Size: 3/4"Material: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.5...
![GROCO Bronze Hose Barb Thru-Hull Fitting - 5\/8" [HTH-625]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/16054/20181/75215XL__44568.1677991273.jpg?c=1 "GROCO Bronze Hose Barb Thru-Hull Fitting - 5\/8\" [HTH-625]")
GROCO
GROCO Bronze Hose Barb Thru-Hull Fitting - 5/8" [HTH-625]
Bronze Hose Barb Thru-Hull Fitting - 5/8" Features:NPS Thread With Hose ConnectionC83600 BronzeUL Listed 647B Specifications:Hose Size: 5/8"Material: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.53...
![GROCO Bronze Hose Barb Thru-Hull Fitting - 1\/2" [HTH-500]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/16053/20180/75214XL__94366.1677991271.jpg?c=1 "GROCO Bronze Hose Barb Thru-Hull Fitting - 1\/2\" [HTH-500]")
GROCO
GROCO Bronze Hose Barb Thru-Hull Fitting - 1/2" [HTH-500]
Bronze Hose Barb Thru-Hull Fitting - 1/2" Features:NPS Thread With Hose ConnectionC83600 BronzeUL Listed 647B Specifications:Hose Size: 1/2"Material: BronzeBox Dimensions: 3"H x 3"W x 4"L WT: 0.45...
![GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-2000-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15578/19447/74304XL__28807.1677989992.jpg?c=1 "GROCO 2\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-2000-WS]")
GROCO
GROCO 2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-2000-WS]
2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 1-1\/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1500-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15577/19446/74303XL__28295.1677989988.jpg?c=1 "GROCO 1-1\/2\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1500-WS]")
GROCO
GROCO 1-1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1500-WS]
1-1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 1-1\/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1250-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15576/19445/74302XL__79570.1677989986.jpg?c=1 "GROCO 1-1\/4\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1250-WS]")
GROCO
GROCO 1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1250-WS]
1-1/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1000-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15575/19444/74301XL__33556.1677989984.jpg?c=1 "GROCO 1\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-1000-WS]")
GROCO
GROCO 1" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-1000-WS]
1" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 3\/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-750-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15574/19443/74300XL__02988.1677989982.jpg?c=1 "GROCO 3\/4\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-750-WS]")
GROCO
GROCO 3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-750-WS]
3/4" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 1\/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-500-WS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15573/19442/74299XL__78245.1677989980.jpg?c=1 "GROCO 1\/2\" NPS NPT Combo Stainless Steel Thru-Hull Fitting w\/Nut [TH-500-WS]")
GROCO
GROCO 1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting w/Nut [TH-500-WS]
1/2" NPS NPT Combo Stainless Steel Thru-Hull Fitting with NutFeatures:NPSM / NPT combination thread#316 Stainless SteelSizes from 1/2" to 3"UL Listed 647BBSPP and Stainless Steel models available...
![GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-2000-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15572/19441/74298XL__25971.1677989978.jpg?c=1 "GROCO 2\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-2000-W]")
GROCO
GROCO 2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-2000-W]
2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![GROCO 1-1\/2" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1500-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15571/19440/74293XL__38614.1677989976.jpg?c=1 "GROCO 1-1\/2\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1500-W]")
GROCO
GROCO 1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1500-W]
1-1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![GROCO 1-1\/4" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1250-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15570/19439/74292XL__84581.1677989974.jpg?c=1 "GROCO 1-1\/4\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1250-W]")
GROCO
GROCO 1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1250-W]
1-1/4" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1000-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15569/19438/74291XL__72507.1677989971.jpg?c=1 "GROCO 1\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-1000-W]")
GROCO
GROCO 1" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-1000-W]
1" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![GROCO 3\/4" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-750-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15568/19437/74290XL__37383.1677989969.jpg?c=1 "GROCO 3\/4\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-750-W]")
GROCO
GROCO 3/4" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-750-W]
3/4" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![GROCO 1\/2" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-500-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15567/19436/74289XL__34874.1677989967.jpg?c=1 "GROCO 1\/2\" NPS NPT Combo Bronze Thru-Hull Fitting w\/Nut [TH-500-W]")
GROCO
GROCO 1/2" NPS NPT Combo Bronze Thru-Hull Fitting w/Nut [TH-500-W]
1/2" NPS NPT Combo Bronze Thru-Hull Fitting with NutFeatures:NPSM / NPT combination threadC83600 BronzeSizes from 1/2" to 5"UL Listed 647BAvailable with (-W) or without nut (-L)BSPP and Stainless...
![Perko Thru-Hull Scupper f\/Mounting Through Transom [0323DP]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/15139/18845/73277XL__15468.1677988906.jpg?c=1 "Perko Thru-Hull Scupper f\/Mounting Through Transom [0323DP]")
Perko
Perko Thru-Hull Scupper f/Mounting Through Transom [0323DP]
Thru-Hull Scupper for Mounting Through TransomFeatures:Molded White PolymerSoft Black FlapperNut and Mounting Hardware IncludedSpecifications:Hose Size: 1-1/2"Mounting Hole Diameter: 1-7/8"Max. Hole...
![Attwood Plastic Thru-Hull Fitting - 1-1\/2" - White [3875-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/12295/15303/67101XL__62903.1677981652.jpg?c=1 "Attwood Plastic Thru-Hull Fitting - 1-1\/2\" - White [3875-3]")
Attwood Marine
Attwood Plastic Thru-Hull Fitting - 1-1/2" - White [3875-3]
Plastic Thru-Hull Fitting - 1-1/2" - WhiteThese thru-hulls are made with a durable, thermoplastic construction which prevents electrolysis.Caution: Thru-Hull connectors are designed for installation...
![Perko 3\/4" Thru-Hull Fitting f\/Hose - Plastic Narrow Flange [0301DP5]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/12125/15105/66633XL__41422.1677981218.jpg?c=1 "Perko 3\/4\" Thru-Hull Fitting f\/Hose - Plastic Narrow Flange [0301DP5]")
Perko
Perko 3/4" Thru-Hull Fitting f/Hose - Plastic Narrow Flange [0301DP5]
3/4" Thru-Hull Fitting f/Hose - Plastic Narrow FlangeFeatures:Molded whiteNarrow FlangeSpecifications:Hose Size: 3/4"Mounting Hole Diameter: 1"Max. Hull Thickness: 1-7/16"O.D. Flange: 1-1/2" Specifi