IMPA: 732601

Stainless Steel Threaded Square Head Plugs for Marine Use

These stainless steel threaded square head plugs are essential components for sealing pipe ends and fittings in marine piping systems. Manufactured from high-grade 316 stainless steel, they offer excellent corrosion resistance against saltwater, chemicals, and harsh offshore environments. Designed with a square head for easy wrench installation and removal, these plugs provide a secure, leak-proof closure for threaded pipe connections.

Ideal for ship chandlers and marine maintenance crews, these square head plugs conform to standard NPT and BSP thread forms, ensuring compatibility with a wide range of marine pipe fittings. Available in multiple sizes, they are a reliable choice for sealing unused ports, test points, and temporary closures in hydraulic, cooling, and fuel lines. This product corresponds to IMPA code 732601, under the category of pipe and tube fittings, making it a recognized item for ship supply inventory.

Key Features

Technical Specifications

Material316 Stainless Steel
Thread TypeNPT, BSP
Head StyleSquare
Size Range1/8" to 2"
Pressure RatingUp to 1500 PSI (10.3 MPa)
Temperature Range-50°C to 200°C (-58°F to 392°F)
Corrosion ResistanceExcellent in marine/saltwater environments
ApplicationsPipe sealing, shipbuilding, offshore platforms, hydraulic systems
IMPA Code732601

Frequently Asked Questions

What thread types are available for these square head plugs?

Our stainless steel square head plugs are available in both NPT (National Pipe Thread) and BSP (British Standard Pipe) thread variations to suit international marine applications. Please specify your required thread type when ordering.

Are these plugs resistant to saltwater corrosion?

Yes. These plugs are made from 316 stainless steel, which contains molybdenum for enhanced resistance to chloride corrosion, making them ideal for use in saltwater environments.

What is the maximum pressure and temperature rating?

These plugs are rated for pressures up to 1500 PSI and temperatures ranging from -50°C to 200°C, making them suitable for demanding marine piping systems.

Can I use these plugs in hydraulic or fuel lines?

Absolutely. The NPT/BSP threads and corrosion-resistant construction make them suitable for hydraulic, cooling, fuel, and ballast systems aboard ships.

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