DOT Push to Connect Fittings – Compliant with FMVSS 571.106

We specialize in manufacturing high-performance push to connect fittings specifically designed for DOT air brake systems, fully aligned with the U.S. Department of Transportation (DOT) standards and FMVSS 571.106 regulations. 

Our fittings are widely used across commercial vehicles including trucks, buses, trailers, agricultural and off-road equipment—offering safe, efficient, and reliable connections for global OEM and Tier 1 suppliers.

Designed for FMVSS 571.106 Compliance

FMVSS 571.106 (Federal Motor Vehicle Safety Standard) outlines strict performance criteria for brake hose assemblies and fittings used in motor vehicles. These include requirements for tensile strength, leak resistance, boiling water durability, vibration endurance, and more.

Our DOT push to connect fittings are designed and validated accordingly, with key features such as:

• Tensile test compliant with FMVSS 571.106

• Retention in boiling water (boiling water pull-out resistance)

• Leak-free under pressure in DOT air brake applications

• Compatible with SAE J844 Type A & B nylon tubing

• Optimized collet grip and tube insertion depth

Why Choose Our DOT Push to Connect Fittings?

With over 10 years of experience supplying OEM automotive manufacturers, we understand the stringent performance and traceability requirements of safety-critical components. Each of our push to connect fittings is engineered with precision and tested to ensure full compliance with FMVSS 571.106 and DOT specifications.

 In-House Testing & Proven Reliability

Our facility is equipped with an in-house testing equip and robust quality assurance systems. We provide comprehensive internal test reports, including:

• Room temperature tensile strength

• Boiling water pull-out tests

• Leak and pressure retention tests

• Vibration endurance under operational stress

All tests are conducted following FMVSS 571.106 methodology to verify performance at every stage—from development to mass production—greatly improving success rates during OEM validation.

Quick Assembly, Tool-Free, and Easy Field Maintenance

The push-to-connect design allows fast and secure installation without tools, making it ideal for field service and tight vehicle assembly lines. Our fittings are commonly used in:

• Trucks & trailers

• Buses & public transit vehicles

• Construction and agricultural machinery

Broad Range of Sizes and Materials

• Tube sizes available: 5/32", 1/4", 3/8", 1/2", 5/8"

• Thread types: NPTF, BSPT

• Materials: JIS-C3604, CW617N

• O-rings: NBR, HNBR, or EPDM depending on temperature/oil resistance needs

Typical Applications

• DOT air brake nylon tubing connections

• Secondary and auxiliary air systems

• Air suspension modules

• Trailer air brake circuits

• Pneumatic lines in truck cabs and chassis systems

Request Samples and Technical Consultation

If you are looking for FMVSS 571.106 compliant push to connect fittings for DOT-regulated air brake systems, we offer samples, internal test reports, and full technical support. Contact us today to learn how we can become your trusted partner in DOT air brake fittings.