Groco TH-1500-W Bronze Thru-Hull Fitting 1-1/2" NPS Thread with Nut

The Groco TH-1500-W is a standard-length bronze thru-hull fitting designed for below-waterline marine applications. This 1-1/2" NPS threaded fitting provides a reliable connection point for seacocks, valves, and through-hull plumbing systems.

Key Features:

• Durable bronze construction for corrosion resistance in marine environments
• 1-1/2" NPS (National Pipe Straight) thread for secure connection
• Standard length threaded portion can be cut to proper length based on hull and backing block thickness
• Includes mounting nut for secure installation
• Flanged design provides proper sealing surface against hull

Installation Notes:

• Threaded portion should be cut to appropriate length considering combined hull and butt block thickness
• Account for thread depth requirements when connecting to seacocks or valves
• Marine-grade sealant recommended between hull and thru-hull flange for watertight seal
• NOT approved for potable water systems

Groco thru-hulls are manufactured to exacting standards and are trusted by boat builders and marine professionals for reliable, long-lasting performance in demanding saltwater and freshwater environments.