Brake Line Fittings | McMaster-Carr

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284 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-Temperature/High-Pressure D.O.T.
Push-to-Connect Tube Fittings for Air

Connect high-pressure brake lines with fittings that won’t crack in frigid temperatures. Often used on commercial trucks and trailers, these fittings meet Department of Transportation FMVSS 571 safety standards.

Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

Connect air brake lines with fittings that won’t crack in sub-zero temperatures. They meet Department of Transportation FMVSS 571 safety standards, so they’re often used in commercial trucks and trailers.

Color-Coded Identification Rings
for Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

Color-code your lines by snapping these rings over the release ring on low-temperature D.O.T. push-to-connect tube fittings.

D.O.T. Brass Compression Tube Fittings for Air

Safe for use in your air brake line, these fittings meet Department of Transportation FMVSS 571 standards. They’ve been tested for thermal cycling, vibration, and burst pressure, so put them to work right away.

Nuts for D.O.T. Brass
Compression Tube Fittings for Air

Sleeves for D.O.T. Brass
Compression Tube Fittings for Air

Screw-On Hose Fittings for D.O.T. Hose

Create or repair D.O.T. hose assemblies in the field with just a wrench and a vise, no crimper required.

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How to Identify and Measure Fittings

Pipe, Tubing, Hose, and Fittings

Low-Temperature/High-Pressure D.O.T.
Push-to-Connect Tube Fittings for Air

Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

Color-Coded Identification Rings
for Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

D.O.T. Brass Compression Tube Fittings for Air

Nuts for D.O.T. Brass
Compression Tube Fittings for Air

Sleeves for D.O.T. Brass
Compression Tube Fittings for Air

Screw-On Hose Fittings for D.O.T. Hose

How to Identify and Measure Fittings

Pipe, Tubing, Hose, and Fittings

Low-Temperature/High-Pressure D.O.T.Push-to-Connect Tube Fittings for Air

Low-Temperature D.O.T.Push-to-Connect Tube Fittings for Air

Color-Coded Identification Ringsfor Low-Temperature D.O.T. Push-to-Connect Tube Fittings for Air

D.O.T. Brass Compression Tube Fittings for Air

Nuts for D.O.T. BrassCompression Tube Fittings for Air

Sleeves for D.O.T. BrassCompression Tube Fittings for Air

Screw-On Hose Fittings for D.O.T. Hose

Low-Temperature/High-Pressure D.O.T.
Push-to-Connect Tube Fittings for Air

Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

Color-Coded Identification Rings
for Low-Temperature D.O.T.
Push-to-Connect Tube Fittings for Air

Nuts for D.O.T. Brass
Compression Tube Fittings for Air

Sleeves for D.O.T. Brass
Compression Tube Fittings for Air