Perko 1/2" Thru-Hull Fitting w/Pipe Thread Bronze MADE IN THE USA

The Perko 1/2" Thru-Hull Fitting with Pipe Thread in cast bronze is a marine-grade through-hull penetration designed for boats requiring reliable seawater applications. This 1/2-inch thru-hull fitting with pipe thread is manufactured in the USA and serves as the foundation for secure deck and hull penetrations on vessels ranging from fishing boats to cruising sailboats. Cast bronze construction delivers corrosion resistance in saltwater environments where stainless steel fasteners alone cannot guarantee longevity.

Technical specifications include a machined flange designed to fit hull profiles with grooved retention for bedding compound application—a critical feature that prevents water intrusion and isolates the fitting from hull flex. The neck threads to approximately 3/8 inch from the flange, accommodating standard marine hose or pipe connections. Key dimensions include a 1-1/2 inch outside diameter flange and a 13/16 inch mounting hole diameter, with maximum hull thickness capacity of 1-3/8 inches. These dimensions are optimized for integration with through-hull valves, seacocks, and through-hull fittings common in marine plumbing and ventilation systems.

This fitting is essential for boat owners and marine technicians installing or replacing through-hull penetrations below the waterline. Weekend boaters conducting routine maintenance, liveaboards managing aging systems, and professional marine installers all depend on quality through-hull fittings to prevent catastrophic water entry. The USA manufacturing ensures supply chain reliability and consistent quality control. Bronze construction is the marine industry standard for below-waterline applications, offering decades of service life when paired with proper bedding compound and stainless fasteners.