Locknut Joints | McMaster-Carr

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117 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Low-Pressure Stainless Steel Threaded Pipe Fittings

Use these corrosion-resistant fittings in a low-pressure pipe line.

Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Use these fittings in extreme-pressure conditions up to 15,000 psi.

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

The galvanized finish on these fittings provides fair corrosion resistance. Fittings are for use in low-pressure applications.

Low-Pressure Iron and Steel Threaded Pipe Fittings

Use these fittings for low-pressure applications in noncorrosive environments.

Extreme-Pressure Steel Threaded Pipe Fittings

The strongest steel fittings we offer, these can withstand extreme-pressure applications.

High-Pressure Brass Threaded Pipe Fittings

These brass fittings have the strength to handle high-pressure applications.

Low-Pressure Brass and
Bronze Threaded Pipe Fittings

Use these fittings in low-pressure flow applications. They have good corrosion resistance.

Low-Pressure Plated Brass Threaded Pipe Fittings

Used in low-pressure pipe lines, these brass fittings have a plating that makes them shiny and improves corrosion resistance.

Low-Pressure Aluminum Threaded Pipe Fittings

In addition to being lightweight, these aluminum fittings offer good corrosion resistance. Use them in low-pressure flow applications.

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How to Identify and Measure Fittings

Metal Pipe and Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

Extreme-Pressure Steel Threaded Pipe Fittings

High-Pressure Brass Threaded Pipe Fittings

Low-Pressure Brass and
Bronze Threaded Pipe Fittings

Low-Pressure Plated Brass Threaded Pipe Fittings

Low-Pressure Aluminum Threaded Pipe Fittings

How to Identify and Measure Fittings

Metal Pipe and Pipe Fittings

Low-Pressure Stainless Steel Threaded Pipe Fittings

Extreme-Pressure StainlessSteel Threaded Pipe Fittings

Low-Pressure Galvanized Ironand Steel Threaded Pipe Fittings

Low-Pressure Iron and Steel Threaded Pipe Fittings

Extreme-Pressure Steel Threaded Pipe Fittings

High-Pressure Brass Threaded Pipe Fittings

Low-Pressure Brass andBronze Threaded Pipe Fittings

Low-Pressure Plated Brass Threaded Pipe Fittings

Low-Pressure Aluminum Threaded Pipe Fittings

Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

Low-Pressure Galvanized Iron
and Steel Threaded Pipe Fittings

Low-Pressure Brass and
Bronze Threaded Pipe Fittings