Groco Bronze Pipe Nipple, 1 Inch NPT Thread

This Groco bronze pipe nipple is a short, fully-threaded connector fitting sized for 1 inch NPT (National Pipe Thread) plumbing runs. It is designed to join two threaded fittings, such as a seacock, strainer, valve, or hose adapter, into a single continuous line, and is commonly used in below-waterline thru-hull plumbing systems where a corrosion-resistant, marine-grade connector is required. The nipple is built in bronze with a bronze exterior finish, giving it strong resistance to saltwater corrosion compared to standard plated-steel or plastic hardware, making it suitable for long-term use in wet bilge and below-waterline environments. Its compact dimensions of 3 x 2 x 2 inches allow it to fit into tight plumbing runs without requiring extra clearance. As a standard 1 inch NPT nipple, it is compatible with any fitting, valve, seacock, or adapter that uses a matching 1 inch NPT female thread, making it a straightforward drop-in connector for repairs, replacements, or new plumbing installations. Because it is a generic threaded connector rather than a model-specific replacement part, it is not tied to a particular engine or boat model and instead fits based on matching thread size and type.

Specifications

• Brand: Groco
• Manufacturer Part Number: PN-1000
• Thread Size: 1 inch
• Thread Type: NPT
• Connector Type: Nipple
• Material: Bronze
• Exterior Finish: Bronze
• Item Dimensions: 3 x 2 x 2 inches
• Weight: 0.38 pounds
• UPC: 742985143654

Frequently Asked Questions

What thread size does this pipe nipple use? The Groco PN-1000 pipe nipple is threaded for 1 inch NPT (National Pipe Thread) connections on both ends.

What material is the PN-1000 pipe nipple made from? It is made from bronze with a bronze exterior finish, which resists corrosion in saltwater plumbing environments.

Will this nipple fit my seacock or strainer? Yes, as long as the seacock, strainer, valve, or fitting has a 1 inch NPT female thread, the Groco PN-1000 nipple will thread in and connect the two components.

What are the dimensions of the PN-1000? The Groco bronze pipe nipple measures 3 x 2 x 2 inches.

How much does the PN-1000 pipe nipple weigh? This Groco fitting weighs 0.38 pounds.

Is this nipple compatible with plastic or PVC thru-hull fittings? Yes, the Groco PN-1000 uses a standard 1 inch NPT thread, so it can be threaded into any fitting with a matching 1 inch NPT female thread regardless of the mating fitting's material.

Is a pipe nipple the same as a hose barb? No, the PN-1000 is a fully-threaded nipple designed to connect two threaded (NPT) fittings, not a barbed fitting for hose clamping.

What is this fitting typically used for? The Groco bronze pipe nipple is typically used to join threaded plumbing components, such as a seacock, strainer, or valve, in below-waterline marine plumbing systems.

Does this part come with any additional hardware? The listing covers the Groco PN-1000 bronze pipe nipple itself; no additional hardware is specified.

Is the PN-1000 specific to a certain boat model or engine? No, the PN-1000 is a generic 1 inch NPT bronze pipe nipple, so it fits based on matching thread size rather than a specific boat model or engine.