Boat Thru-Hull Fittings
- Perko®1-5/8" Hole Bronze Thru-Hull Fitting for 1-1/4" NPT Pipe (0322DP7PLB)1-5/8" Hole Bronze Thru-Hull Fitting for 1-1/4" NPT Pipe by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Cast BronzeFlange is machined to fit hull and grooved to retain bedding compound$93.24
- Perko®1-7/8" Hole Bronze Chrome Plated Thru-Hull Fitting for 1-1/2" D Hose (0350008DPC)1-7/8" Hole Bronze Chrome Plated Thru-Hull Fitting for 1-1/2" D Hose (0350008DPC) by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Cast BronzePlain or Chrome Plated$127.11
- Perko®1-7/8" Hole Bronze Extra Long Thru-Hull Fitting for 1-1/2" NPT Pipe (0348DP8PLB)1-7/8" Hole Bronze Extra Long Thru-Hull Fitting for 1-1/2" NPT Pipe by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...Cast BronzeFlange is machined to fit hull and grooved to retain bedding compound neck is threaded to approximately 3/8" from flange$75.28
- Perko®1-7/8" Hole Bronze Plain Thru-Hull Fitting for 1-1/2" D Hose (0350008DPP)1-7/8" Hole Bronze Plain Thru-Hull Fitting for 1-1/2" D Hose (0350008DPP) by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....Expertly crafted from premium materialsHigh quality at a budget-friendly price$115.04
- Perko®1-7/8" Hole Bronze Thru-Hull Fitting for 1-1/2" NPT Pipe (0322DP8PLB)1-7/8" Hole Bronze Thru-Hull Fitting for 1-1/2" NPT Pipe by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Cast BronzeFlange is machined to fit hull and grooved to retain bedding compound$120.18
- Perko®13/16" Hole Bronze Chrome Plated Thru-Hull Fitting for 5/8" D Hose (0350004DPC)13/16" Hole Bronze Chrome Plated Thru-Hull Fitting for 5/8" D Hose (0350004DPC) by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Cast BronzePlain or Chrome Plated$46.63
- Perko®13/16" Hole Bronze Plain Thru-Hull Fitting for 5/8" D Hose (0350004DPP)13/16" Hole Bronze Plain Thru-Hull Fitting for 5/8" D Hose (0350004DPP) by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Expertly crafted from premium materialsHigh quality at a budget-friendly price$36.29
- Perko®13/16" Hole Bronze Thru-Hull Fitting for 1/2" NPT Pipe (0322DP4PLB)13/16" Hole Bronze Thru-Hull Fitting for 1/2" NPT Pipe by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Cast BronzeFlange is machined to fit hull and grooved to retain bedding compound$43.11
- Perko®2-3/8" Hole Bronze Thru-Hull Fitting for 2" NPT Pipe (0322009PLB)2-3/8" Hole Bronze Thru-Hull Fitting for 2" NPT Pipe by Perko®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...Cast BronzeFlange is machined to fit hull and grooved to retain bedding compound$111.72
- T-H Marine®1-1/4" Hole Chrome Plated Washdown Fitting with Shut-Off Valve (WDV-1CP-DP)1-1/4" Hole Chrome Plated Washdown Fitting with Shut-Off Valve by T-H Marine®. A bulkhead mounted washdown fitting that is inexpensive, functional, easy to install, and rust proof. This injection molded, chrome plated ABS fitting is...Chrome Plated ABS flangeInjection molded, UV stable, rust proof$35.98
- T-H Marine®1-1/4" Hole Straight Black Washdown Fitting with Shut-Off Valve (WDV-1-DP)1-1/4" Hole Straight Black Washdown Fitting with Shut-Off Valve by T-H Marine®. Attractive, Easy to Install Wash Down Fittings. A bulkhead mounted washdown fitting that is inexpensive, functional, easy to install, and rust proof. This...Injection molded, UV stable, rust proofStandard garden hose thread outlet$34.72
- T-H Marine®2" Hole Plastic Black Thru-Hull Fitting for 1-1/2" D Hose, Packaged (TH-1500-DP)2" Hole Plastic Black Thru-Hull Fitting for 1-1/2" D Hose, Packaged (TH-1500-DP) by T-H Marine®. #1 Plastic Thru-Hull Supplier in the U.S.A. Their molded Thru-Hull fittings are used by more OEM boat builders than any other brand. All...Expertly crafted from premium materialsHigh quality at a budget-friendly price$8.06
- Groco®1" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1" NPS Pipe with Nut (HSTH-1000-W)1" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1" NPS Pipe with Nut (HSTH-1000-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$31.35
- Groco®1-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/2" NPS Pipe with Nut (HSTH-1500-W)1-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/2" NPS Pipe with Nut (HSTH-1500-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$73.64
- Groco®1-1/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/4" NPS Pipe with Nut (HSTH-1250-W)1-1/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/4" NPS Pipe with Nut (HSTH-1250-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$54.28
- Groco®2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2" NPS Pipe with Nut (HSTH-2000-W)2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2" NPS Pipe with Nut (HSTH-2000-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$87.75
- Groco®3/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3/4" NPS Pipe with Nut (HSTH-750-W)3/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3/4" NPS Pipe with Nut (HSTH-750-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$20.74
- Groco®FTH Series 1" Hole Bronze Combo Flush Thru-Hull Fitting for 1" NPS Pipe (FTH-1000-W)FTH Series 1" Hole Bronze Combo Flush Thru-Hull Fitting for 1" NPS Pipe by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It...Machined flat face for flush mount or dripless applicationsNPSM/NPT combination thread$39.69
- Groco®FTH Series 1-1/2" Hole Bronze Combo Flush Thru-Hull Fitting for 1-1/2" NPS Pipe (FTH-1500-W)FTH Series 1-1/2" Hole Bronze Combo Flush Thru-Hull Fitting for 1-1/2" NPS Pipe by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...Machined flat face for flush mount or dripless applicationsNPSM/NPT combination thread$78.93
- Groco®FTH Series 3/4" Hole Bronze Combo Flush Thru-Hull Fitting for 3/4" NPS Pipe (FTH-750-W)FTH Series 3/4" Hole Bronze Combo Flush Thru-Hull Fitting for 3/4" NPS Pipe by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind....Machined flat face for flush mount or dripless applicationsNPSM/NPT combination thread$27.50
- Groco®HTH Series 1" Hole Stainless Steel Thru-Hull Fitting for 1" D Hose (HTH-1000-S)HTH Series 1" Hole Stainless Steel Thru-Hull Fitting for 1" D Hose (HTH-1000-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...NPS Thread With Hose Connection#316 Stainless Steel$37.26
- Groco®HTH Series 1" Hole Stainless Steel Thru-Hull Fitting for 1-1/8" D Hose (HTH-1125-S)HTH Series 1" Hole Stainless Steel Thru-Hull Fitting for 1-1/8" D Hose (HTH-1125-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...NPS Thread With Hose Connection#316 Stainless Steel$37.62
- Groco®HTH Series 1-1/2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose (HTH-1500-S)HTH Series 1-1/2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose (HTH-1500-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...NPS Thread With Hose Connection#316 Stainless Steel$72.54
- Groco®HTH Series 1-1/4" Hole Stainless Steel Thru-Hull Fitting for 1-1/4" D Hose (HTH-1250-S)HTH Series 1-1/4" Hole Stainless Steel Thru-Hull Fitting for 1-1/4" D Hose (HTH-1250-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...NPS Thread With Hose Connection#316 Stainless Steel$59.59
- Groco®HTH Series 1/2" Hole Stainless Steel Thru-Hull Fitting for 1/2" D Hose (HTH-500-S)HTH Series 1/2" Hole Stainless Steel Thru-Hull Fitting for 1/2" D Hose (HTH-500-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...NPS Thread With Hose Connection#316 Stainless Steel$35.46
- Groco®HTH Series 2" Hole Stainless Steel Thru-Hull Fitting for 2" D Hose (HTH-2000-S)HTH Series 2" Hole Stainless Steel Thru-Hull Fitting for 2" D Hose (HTH-2000-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...NPS Thread With Hose Connection#316 Stainless Steel$89.82
- Groco®HTH Series 3/4" Hole Stainless Steel Thru-Hull Fitting for 3/4" D Hose (HTH-750-S)HTH Series 3/4" Hole Stainless Steel Thru-Hull Fitting for 3/4" D Hose (HTH-750-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...NPS Thread With Hose Connection#316 Stainless Steel$32.05
- Groco®HTH Series 3/4" Hole Stainless Steel Thru-Hull Fitting for 5/8" D Hose (HTH-625-S)HTH Series 3/4" Hole Stainless Steel Thru-Hull Fitting for 5/8" D Hose (HTH-625-S) by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers...NPS Thread With Hose Connection#316 Stainless Steel$32.05
- Groco®HTHC Series 1" Hole 90° Stainless Steel Elbow Thru-Hull Fitting for 1" D Hose (HTHC-1000-S)HTHC Series 1" Hole 90° Stainless Steel Elbow Thru-Hull Fitting for 1" D Hose by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in...90 Degree Barb#316 Stainless Steel Thru Hull with Bronze Hose Connection$57.86
- Groco®HTHC Series 1-1/2" Hole 90° Stainless Steel Elbow Thru-Hull Fitting for 1-1/2" D Hose (HTHC-1500-S)HTHC Series 1-1/2" Hole 90° Stainless Steel Elbow Thru-Hull Fitting for 1-1/2" D Hose by Groco®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with...90 Degree Barb#316 Stainless Steel Thru Hull with Bronze Hose Connection$160.63
Most boats have different systems using special openings in the hull for their operation, both above and below the waterline. These include engine cooling, water ballast, plumbing, and some other systems, and each of them has to be installed properly and inspected regularly in order to avoid dangerous leaks. Particularly, thru-hull fittings and seacocks require careful attention, especially those installed under the water. It's not recommended to use nylon or even brass fittings in such places, while those made of bronze or some specific composite materials are approved by ABYC and meet strict requirements concerning tensile strength, corrosion resistance, etc.
As for boat thru-hull fittings installed above the waterline, the requirements are somewhat lower, but it doesn't mean they can be omitted. In each case, your fittings should be of high quality and have an appropriate design and diameter. A wide range of such products is offered on our virtual shelves. You can choose from straight and elbow fittings made from different materials and having threaded or barbed ends to connect a valve, pipe, or hose. Sourced from reputable brands such as Groco or T-H Marine, they offer high quality and perfect tightness.