Thru-Hull Fittings

2-1/2" Slotted Hi Speed Thru-Hull with NutFeatures:2-1/2" NPSM / NPT combination threadC83600 BronzeWith NutSlotted

1-1/2" Slotted Hi Speed Thru-Hull with NutFeatures:1-1/2" NPSM / NPT combination threadC83600 BronzeWith NutSlotted

1-1/4" Slotted Hi Speed Thru-Hull with NutFeatures:1-1/4" NPSM / NPT combination threadC83600 BronzeWith NutSlotted

1" Slotted Hi Speed Thru-Hull with NutFeatures:1" NPSM / NPT combination threadC83600 BronzeWith NutSlotted

3/4" Slotted Hi Speed Thru-Hull with NutFeatures:3/4" NPSM / NPT combination threadC83600 BronzeWith NutSlotted

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: PlasticBrochure (pdf)

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: PlasticBrochure (pdf)

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: PlasticBrochure (pdf)

1-1/2" Duplex Stainless Steel 90 Degree Thru-Hull FittingSpecifications:Hose Size: 1-1/2"Dimensions: Flange O.D.: 2-3/8" Thread Length: 1-5/8" Barb Length: 1-1/2" Overall Length: 4" Cut Out: 1-1/2"Max. Hull Thickness: 1-1/4"Stainless Steel

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.Specifications:Fits Hose Size: (inch) 1-1/8"inner...

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 the life of the boat?Rugged Stainless Construction:Cast...

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 last the life of the boat?Rugged Stainless...

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 listed 647BIncludes nut BSPP and stainless steel...

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 647BIncludes nut BSPP and stainless steel models are...

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.Specifications:Fits Hose Size: (inch) 3/4"inner...

White Plastic Thru-Hull Fitting - 1-1/8" Inner DiameterThis thru-hull fitting is made with a durable, thermoplastic construction, which prevents electrolysis.Specifications:Hose Size: (inch) 1-1/8" Inner diameterStem Length: (inch) 3-1/4"Max Hull...

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 the boat?Rugged Stainless Construction:Cast from...

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 last the life of the boat?Rugged Stainless...

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 last the life of the boat?Rugged Stainless...

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 last the life of the boat?Rugged Stainless...