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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.
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![T-M Marine 90-Degree Cockpit Scupper Drain - White [CSD-92-DP]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/42697/60015/113650XL__73756.1775181134.jpg?c=1 "T-M Marine 90-Degree Cockpit Scupper Drain - White [CSD-92-DP]")
T-H Marine Supplies
T-M Marine 90-Degree Cockpit Scupper Drain - White [CSD-92-DP]
90-Degree Cockpit Scupper Drain - WhiteThis cockpit scupper drain is an affordable and durable solution for draining areas below the waterline. Made from high-strength, UV-stabilized polymer, it...
![GROCO 1-1\/2" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1500-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/41359/58202/111453XL__44693.1762995277.jpg?c=1 "GROCO 1-1\/2\" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1500-W]")
GROCO
GROCO 1-1/2" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1500-W]
1-1/2" Slotted Hi Speed Thru-Hull with NutFeatures:
![GROCO 1-1\/4" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1250-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/41358/58201/111452XL__58506.1762995275.jpg?c=1 "GROCO 1-1\/4\" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1250-W]")
GROCO
GROCO 1-1/4" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1250-W]
1-1/4" Slotted Hi Speed Thru-Hull with NutFeatures:
![GROCO 1" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1000-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/41357/58200/111451XL__64546.1762995272.jpg?c=1 "GROCO 1\" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-1000-W]")
GROCO
GROCO 1" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-1000-W]
1" Slotted Hi Speed Thru-Hull with NutFeatures:
![GROCO 3\/4" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-750-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/41356/58199/111450XL__72302.1762995269.jpg?c=1 "GROCO 3\/4\" Slotted Hi Speed Thru-Hull w\/Nut [HSSLTH-750-W]")
GROCO
GROCO 3/4" Slotted Hi Speed Thru-Hull w/Nut [HSSLTH-750-W]
3/4" Slotted Hi Speed Thru-Hull with NutFeatures:
![Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1\/2"-2" [930003SS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/39427/55194/109272XL__82200.1750897155.jpg?c=1 "Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1\/2\"-2\" [930003SS]")
Forespar Performance Products
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2" [930003SS]
Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1-1/2"-2"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications:Hose Size: 2"Material: PlasticBox...
![Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1\/4" [930002SS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/39426/55193/109271XL__27562.1750897152.jpg?c=1 "Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1\"-1-1\/4\" [930002SS]")
Forespar Performance Products
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4" [930002SS]
Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1"-1-1/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications:Hose Size: 1-1/4"Material: PlasticBox...
![Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1\/2"-3\/4" [930001SS]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/39425/55192/109270XL__70817.1750897150.jpg?c=1 "Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1\/2\"-3\/4\" [930001SS]")
Forespar Performance Products
Forespar Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1/2"-3/4" [930001SS]
Pro Series Valve Stainless Steel Capped Thru-Hull Fits 1/2"-3/4"Thru-hull only for small Pro Series valves; mushroom head, buttress thread Specifications:Hose Size: 3/4"Material: PlasticBox...
![Sea-Dog Thru-Hull w\/Scupper Valve - Injection Molded Acetel [520510-1]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/38784/54223/108453XL__85818.1744422386.jpg?c=1 "Sea-Dog Thru-Hull w\/Scupper Valve - Injection Molded Acetel [520510-1]")
Sea-Dog
Sea-Dog Thru-Hull w/Scupper Valve - Injection Molded Acetel [520510-1]
Thru-Hull with Scupper Valve - Injection Molded AcetelThis Thru-Hull Scupper Valve mounts through the transom and provides a water exit for boats with self-bailing cockpits. Ideal for above the...
![Attwood White Plastic 90 Degree Thru-Hull Connector - 1-1\/8" Inner Diameter [3879-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/38562/53943/98109XL__65385.1742568268.jpg?c=1 "Attwood White Plastic 90 Degree Thru-Hull Connector - 1-1\/8\" Inner Diameter [3879-3]")
Attwood Marine
Attwood White Plastic 90 Degree Thru-Hull Connector - 1-1/8" Inner Diameter [3879-3]
White Plastic 90 Degree Thru-Hull Connector - 1-1/8" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking...
![Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/38176/53127/98084XL__87682.1739474382.jpg?c=1 "Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1\" Inner Diameter [66542-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner Diameter [66542-3]
Stainless Steel Thru-Hull Short Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last...
![Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3\/4" Inner Diameter [66547-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/37841/52643/98089XL__14274.1737035643.jpg?c=1 "Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3\/4\" Inner Diameter [66547-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner Diameter [66547-3]
Stainless Steel Thru-Hull Standard Straight Barbed - 3/4" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...
![GROCO 2-1\/2" Bronze Thru-Hull Fitting w\/Nut [TH-2500-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/36164/50401/103895XL__14037.1727377256.jpg?c=1 "GROCO 2-1\/2\" Bronze Thru-Hull Fitting w\/Nut [TH-2500-W]")
GROCO
GROCO 2-1/2" Bronze Thru-Hull Fitting w/Nut [TH-2500-W]
2-1/2" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 2-1/2" GROCO thru-hull fitting than conventional thru-hulls.Features:NPSM / NPT combination threadC83600 BronzeUL...
![GROCO 3" Bronze Thru-Hull Fitting w\/Nut [TH-3000-W]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/34268/47014/103896XL__24733.1715148151.jpg?c=1 "GROCO 3\" Bronze Thru-Hull Fitting w\/Nut [TH-3000-W]")
GROCO
GROCO 3" Bronze Thru-Hull Fitting w/Nut [TH-3000-W]
3" Bronze Thru-Hull Fitting with NutHigher flow rates are possible with this 3" GROCO thru-hull fitting than conventional thru-hulls.Features:NPSM / NPT combination threadC83600 BronzeUL listed...
![Attwood White Plastic 90 Degree Thru-Hull Connector - 3\/4" Inner Diameter [3877-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29616/39310/98107XL__76426.1678027069.jpg?c=1 "Attwood White Plastic 90 Degree Thru-Hull Connector - 3\/4\" Inner Diameter [3877-3]")
Attwood Marine
Attwood White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter [3877-3]
White Plastic 90 Degree Thru-Hull Connector - 3/4" Inner Diameter90° Thru-Hulls are ideal for tight installations, such as livewell overflow drains. The angled design also eliminates hose kinking...
![Attwood Stainless Steel Scupper Valve Barbed - 1-1\/2" Hose Size [66553-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29611/39305/98094XL__57867.1678027058.jpg?c=1 "Attwood Stainless Steel Scupper Valve Barbed - 1-1\/2\" Hose Size [66553-3]")
Attwood Marine
Attwood Stainless Steel Scupper Valve Barbed - 1-1/2" Hose Size [66553-3]
Stainless Steel Scupper Valve Barbed - 1-1/2" Hose SizePolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will last the life of...
![Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1\/2" Inner Diameter [66551-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29610/39304/98093XL__06690.1678027056.jpg?c=1 "Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1\/2\" Inner Diameter [66551-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner Diameter [66551-3]
Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/2" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...
![Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1\/8" Inner Diameter [66549-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29608/39302/98091XL__62063.1678027051.jpg?c=1 "Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1\/8\" Inner Diameter [66549-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner Diameter [66549-3]
Stainless Steel Thru-Hull Standard Straight Barbed - 1-1/8" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...
![Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29607/39301/98090XL__91047.1678027049.jpg?c=1 "Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1\" Inner Diameter [66548-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner Diameter [66548-3]
Stainless Steel Thru-Hull Standard Straight Barbed - 1" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...
![Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 5\/8" Inner Diameter [66546-3]](https://cdn11.bigcommerce.com/s-ge8sirtax0/images/stencil/230x230/products/29605/39299/98088XL__22709.1678027045.jpg?c=1 "Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 5\/8\" Inner Diameter [66546-3]")
Attwood Marine
Attwood Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner Diameter [66546-3]
Stainless Steel Thru-Hull Standard Straight Barbed - 5/8" Inner DiameterPolish your image with these beautiful, durable stainless steel fittings. Why specify plastic parts when these fittings will...