GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting w/Nut

The GROCO 3/4" Stainless Steel Extra Long Thru-Hull Fitting with Nut is an essential marine-grade component designed for anglers and boaters who require dependable performance below the waterline. This fitting is ideal for applications such as raw water cooling systems, live wells, drainage lines, and transducer installations, ensuring reliability in both saltwater and freshwater environments.

Constructed entirely from stainless steel, the GROCO fitting is built to resist corrosion, outperforming standard brass or plastic fittings that may fail in harsh marine conditions. Its extra-long design is specifically engineered to accommodate thicker hulls, fiberglass composite constructions, or multiple laminate layers, eliminating the need for extensions or adapters that could compromise watertight integrity. The included nut provides a secure grip from the inside, preventing loosening due to vibration and ensuring a permanent seal when used with appropriate marine sealant.

This fitting is particularly beneficial for experienced boaters who may underestimate hull thickness during installation. The GROCO unit's extra-long design mitigates that risk, making installation straightforward and reliable. With a 3/4" diameter, it accommodates common hose barb or NPT configurations used in modern fishing boats and cruising vessels.