Groco TH-1250-W Bronze Thru-Hull Fitting 1-1/4" NPS Thread with Nut

The Groco TH-1250-W is a standard length bronze thru-hull fitting with 1-1/4" NPS thread, designed for reliable below-waterline marine installations. This heavy-duty fitting features durable bronze construction with a flanged design and includes a securing nut for proper installation.

Key Features:

• Bronze construction for superior corrosion resistance in marine environments
• 1-1/4" NPS (National Pipe Straight) thread size
• Standard length design suitable for most hull thicknesses
• Includes bronze nut for secure mounting
• Flanged design for proper sealing against hull surface

Installation Notes:

• Threaded portion should be cut to proper length based on combined hull and backing block thickness
• Consider thread depth requirements when installing with a seacock
• Marine sealant recommended between hull and thru-hull flange for watertight seal
• Not approved for potable water systems

Groco thru-hull fittings are engineered to meet the demanding requirements of marine plumbing systems, providing dependable service in harsh saltwater conditions.