Locknut Joints | McMaster-Carr

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	Pipe Size Pipe Size

1/8

	Thread Type Thread Type

BSPP

NPSL

NPT

	Type Type	Show

	Locknut

	Type Type	Hide


Connector	Adapter

Union	Pipe

Reducing Adapter	Expansion Joint

Flange	Reducer

Bushing	Rotating Joint

Stub End	Plug

Cap	Clamp

Locknut	Outlet

Saddle Tap	Repair Clamp

Nut	Trap

	Material Material

	For Use With For Use With

	For Pipe Material For Pipe Material

	Shape Shape

	Straight

	System of Measurement System of Measurement

Inch

Metric

	Hex Width Hex Width

	Length Length

	Gender Gender

Female

	Connection Style Connection Style

Threaded

	Connection Type Connection Type

	Pipe

	Maximum Pressure Maximum Pressure

	Body Shape Body Shape

	Hex

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	For Pipe Schedule For Pipe Schedule


40	XXH

	Specifications Met Specifications Met

	Maximum Steam Pressure Maximum Steam Pressure

	Class Class

125

150

	Finish Finish

Chrome Plated

Galvanized

	Fabrication Fabrication

Heat Treated

Machined

	Maximum Temperature Maximum Temperature

500° to 999° F

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107 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 Iron and Steel Threaded Pipe Fittings

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

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.

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.