DOT push-to-connect fittings are SAE J844- and FMVSS 106-compliant air brake tube fittings rated for commercial vehicle pneumatic brake systems — truck, trailer, bus, and heavy equipment air lines where federal DOT safety standards apply. The push-in collet grips nylon air brake tubing (1/4 in. to 1/2 in. OD) with a single push, eliminating compression sleeves and flaring tools while meeting the pressure, temperature, and pull-out force requirements of federal motor vehicle safety standards.
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1/16 in. Male NPT x 5/32 in. Tube DOT Composite Adapter -
1/8 in. Composite DOT Union Straight -
5/32 in. x 1/8 in. Composite DOT Male Elbow -
5/32 in. x 1/8 in. Push-In x Male NPT DOT Adapter -
3/16 in. x 1/4 in. Composite DOT Male Connector -
6mm DOT Brass Union -
1/4 in. x 1/4 in. Composite DOT Male 45 Swivel Elbow -
1/4 in. x 1/4 in. Push-In x Male NPT 45 DOT Swivel Elbow -
1/4 in. x 1/8 in. Push-In x Male NPT DOT Adapter -
1/4 in. x 1/8 in. Push-In x Male NPT DOT Adapter, Composite -
1/4 in. x 1/8 in. Push-In x Male NPT DOT Elbow, Composite -
1/4 in. x 1/8 in. Push-In x Male NPT DOT Run Tee, Composite -
1/4 in. x 1/8 in. Push-In x Male NPT DOT Swivel Elbow -
1/4 in. x 3/8 in. Plastic Composite DOT 45 Male Elbow -
1/4 in. x 3/8 in. Push-In x Male NPT DOT Elbow -
3/8 in. x 1/2 in. Push-In x Male NPT 45 DOT Elbow, Composite -
3/8 in. x 1/2 in. Push-In x Male NPT DOT Adapter, Composite -
3/8 in. x 1/2 in. Push-In x Male NPT DOT Elbow -
3/8 in. x 1/4 in. Composite DOT Reducing Union -
3/8 in. x 3/8 in. Push-In x Male NPT DOT Elbow, Composite -
1/2 in. x 1/4 in. Composite DOT Male 45 Swivel Elbow -
1/2 in. x 1/4 in. Push-In x Male NPT 45 DOT Elbow, Composite -
1/2 in. x 3/8 in. Push-In x Male NPT DOT Swivel Elbow -
5/8 in. x 1/2 in. Composite DOT Swivel Male Elbow
DOT push-to-connect fittings are NOT interchangeable with standard pneumatic or instrument-grade push-to-connect fittings — the collet geometry, material ratings, and pressure certification differ. Always verify DOT/SAE J844 compliance markings on fittings used in commercial air brake systems.
Common Applications
Air brake chamber supply and delivery lines, tractor-to-trailer gladhand connections, ABS/EBS modulator supply tubing, suspenssion leveling valve air lines, and any pneumatic circuit on a commercial vehicle subject to FMVSS 121 air brake system requirements.