The BRASS AIR BRAKE NUT 1/4" is a high-quality fitting designed for use in air brake systems serviced by SAE J844 nylon tubing. Constructed from robust brass, this nut meets DOT FVSS571.106 air brake specifications, ensuring reliable performance and safety in demanding applications. It features a size compatible with 1/4" tubing outer diameter and is marked with DOT for compliance. Ideal for commercial vehicles and industrial equipment, this fitting provides a secure connection in air brake assemblies.