Push-to-lock air brake fitting, full-threaded, 6.35 mm (1/4 in) Push-to-lock air brake fitting, full connection Size: 1/10.2 cm Designed for SAE J844 nylon tubes. DOT 49 CFR 571.106 compliant High-strength composite fittings offer weight savings versus all brass fittings, and are currently used by many OEM vehicle manufacturers Fittings meet performance requirements per SAE J1131 Operating temperature range: -42.8 C to +60.0 C Maximum operating pressure: 145 psi The engineered tube retention system and sealing design provide excellent tube grip and resistance to side load Positive release bushing enables easy insertion and removal of tubes Composite body Use scenarios: - Replacing brass fittings in OEM air brake line assemblies to reduce weight while maintaining performance - Retrofit or repair of SAE J844 nylon tube connections on light- to medium-duty trucks and trailers - Field service and maintenance of pneumatic systems that require reliable, low-weight, high-performance fittings