Boat Thru-Hull Fittings
![Boat Plumbing Thru-Hull Fittings](https://ic.boatid.com/boating-marine/pages/boat-plumbing-thru-hull-fittings/boat-plumbing-thru-hull-fittings_collage_0.jpg)
- T-H Marine®90° Plastic White Elbow Thru-Hull Deck Drain for 1-1/2" D Hose, Bulk (TH-1592G-B)90° Plastic White Elbow Thru-Hull Deck Drain for 1-1/2" D Hose, Bulk by T-H Marine®. These thru-hull connectors are designed for 1 1/2" I.D. hose to be used as an overflow drain for baitwells. The filter stands off the thru-hull flange...UV stable, molded deck drain thru-hullDeck drain fitting for boat cockpits$17.78
- T-H Marine®Plastic White Deck Thru-Hull Drain for 1-1/2" D Hose with Grille (TH-1502G-B)Plastic White Deck Thru-Hull Drain for 1-1/2" D Hose with Grille by T-H Marine®. With Grille. These thru-hull connectors are used in the cockpit floor of a boat to drain excess water. A great companion to connect to on of their flapper...UV stable, molded deck drain thru-hullDeck drain fitting for boat cockpits$10.55
- Rule Pumps®3/4" Hole 90° Plastic White Thru-Hull Fitting for 3/4" D Hose (61S)3/4" Hole 90° Plastic White Thru-Hull Fitting for 3/4" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$8.91
- Rule Pumps®5/8" Hole 90° Plastic White Thru-Hull Fitting for 5/8" D Hose (62)5/8" Hole 90° Plastic White Thru-Hull Fitting for 5/8" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$9.19
- Rule Pumps®90° Elbow Plastic White Thru-Hull Fitting for 3/4" D Hose (61)90° Elbow Plastic White Thru-Hull Fitting for 3/4" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$11.75
- Rule Pumps®Straight Plastic White Thru-Hull Fitting for 1-1/2" D Hose (59)Straight Plastic White Thru-Hull Fitting for 1-1/2" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$13.61
- Rule Pumps®Straight Plastic White Thru-Hull Fitting for 1-1/8" D Hose (60)Straight Plastic White Thru-Hull Fitting for 1-1/8" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$10.18
- Rule Pumps®Straight Plastic White Thru-Hull Fitting for 2" D Hose (72)Straight Plastic White Thru-Hull Fitting for 2" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$41.14
- Rule Pumps®Straight Plastic White Thru-Hull Fitting for 3" D Hose (74)Straight Plastic White Thru-Hull Fitting for 3" D Hose by Rule Pumps®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$86.16
- Rule Pumps®Thru-Hull Strainer (73)Thru-Hull Strainer by Rule Pumps®. 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 needs and deliver great quality...Expertly crafted from premium materialsHigh quality at a budget-friendly price$14.51
- Attwood®1-1/8" Hole Polypropylene White Double-Ended Thru-Hull Fitting for 3/4" D Hose (3878-3)1-1/8" Hole Polypropylene White Double-Ended Thru-Hull Fitting for 3/4" D Hose by Attwood®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$17.14
- Attwood®2" Hole Polypropylene White Thru-Hull Fitting for 1-1/2" D Hose, Bulk (38751)2" Hole Polypropylene White Thru-Hull Fitting for 1-1/2" D Hose, Bulk (38751) by Attwood®. 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...Expertly crafted from premium materialsHigh quality at a budget-friendly price$9.47
- Groco®1" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1" NPS Pipe with Nut (HSTHXL-1000-W)1" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1" NPS Pipe with Nut (HSTHXL-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$41.89
- Groco®1-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/2" NPS Pipe with Nut (HSTHXL-1500-W)1-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/2" NPS Pipe with Nut (HSTHXL-1500-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$68.82
- Groco®1-1/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/4" NPS Pipe with Nut (HSTHXL-1250-W)1-1/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 1-1/4" NPS Pipe with Nut (HSTHXL-1250-W) by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM/NPTcombination thread$64.33
- Groco®1/2"-3" Thru-Hull Installation Tool (THT-530)1/2"-3" Thru-Hull Installation Tool by Groco®. THT-530 makes the installation of standard GROCO thru-hull fittings possible by a single installer. Slide the thru-hull fitting, flanged end 1st, over the tool. (It will stop at the proper...Expertly crafted from premium materialsHigh quality at a budget-friendly price$150.35
- Groco®2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2" NPS Pipe with Nut (HSTHXL-2000-W)2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2" NPS Pipe with Nut (HSTHXL-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$93.49
- Groco®2-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2-1/2" NPS Pipe with Nut (HSTH-2500-W)2-1/2" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 2-1/2" NPS Pipe with Nut by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for years to...Designed for increased flow compared to standard Thru Hulls and with less dragNPSM / NPT combination thread$155.59
- Groco®3" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3" NPS Pipe with Nut (HSTH-3000-W)3" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3" NPS Pipe with Nut by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for years to come....Designed for increased flow compared to standard Thru Hulls and with less dragNPSM / NPT combination thread$212.44
- Groco®3/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3/4" NPS Pipe with Nut (HSTHXL-750-W)3/4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 3/4" NPS Pipe with Nut (HSTHXL-750-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$30.14
- Groco®4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 4" NPS Pipe with Nut (HSTH-4000-W)4" Hole Bronze Combo High Speed Pickup Thru-Hull Fitting for 4" NPS Pipe with Nut by Groco®. Provides low pressure, low profile flow into plumbing system. This product is made of high-quality materials to serve you for years to come....Designed for increased flow compared to standard Thru Hulls and with less dragNPSM / NPT combination thread$899.10
- Groco®HTH Series 1" Hole Bronze Thru-Hull Fitting for 1" D Hose (HTH-1000)HTH Series 1" Hole Bronze Thru-Hull Fitting for 1" D Hose (HTH-1000) 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...NPS Thread With Hose ConnectionC83600 Bronze$33.31
- Groco®HTH Series 1" Hole Bronze Thru-Hull Fitting for 1-1/8" D Hose (HTH-1125)HTH Series 1" Hole Bronze Thru-Hull Fitting for 1-1/8" D Hose (HTH-1125) 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...NPS Thread With Hose ConnectionC83600 Bronze$35.16
- Groco®HTH Series 1-1/2" Hole Bronze Thru-Hull Fitting for 1-1/2" D Hose (HTH-1500)HTH Series 1-1/2" Hole Bronze Thru-Hull Fitting for 1-1/2" D Hose (HTH-1500) 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 ConnectionC83600 Bronze$52.36
- Groco®HTH Series 1-1/4" Hole Bronze Thru-Hull Fitting for 1-1/4" D Hose (HTH-1250)HTH Series 1-1/4" Hole Bronze Thru-Hull Fitting for 1-1/4" D Hose (HTH-1250) 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 ConnectionC83600 Bronze$41.89
- Groco®HTH Series 1/2" Hole Bronze Thru-Hull Fitting for 1/2" D Hose (HTH-500)HTH Series 1/2" Hole Bronze Thru-Hull Fitting for 1/2" D Hose (HTH-500) 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...NPS Thread With Hose ConnectionC83600 Bronze$15.86
- Groco®HTH Series 2" Hole Bronze Thru-Hull Fitting for 2" D Hose (HTH-2000)HTH Series 2" Hole Bronze Thru-Hull Fitting for 2" D Hose (HTH-2000) 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...NPS Thread With Hose ConnectionC83600 Bronze$68.07
- Groco®HTH Series 3/4" Hole Bronze Thru-Hull Fitting for 3/4" D Hose (HTH-750)HTH Series 3/4" Hole Bronze Thru-Hull Fitting for 3/4" D Hose (HTH-750) 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...NPS Thread With Hose ConnectionC83600 Bronze$23.81
- Groco®HTH Series 3/4" Hole Bronze Thru-Hull Fitting for 5/8" D Hose (HTH-625)HTH Series 3/4" Hole Bronze Thru-Hull Fitting for 5/8" D Hose (HTH-625) 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...NPS Thread With Hose ConnectionC83600 Bronze$20.62
- Groco®SCUS Series 1-1/2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose with 90° Elbow Adapter (SCUS-1590)SCUS Series 1-1/2" Hole Stainless Steel Thru-Hull Fitting for 1-1/2" D Hose with 90° Elbow Adapter 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...90 Degree BarbScuppers are installed flush with the deck and have a removable drain$133.14
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.