Brass DOT Approved Air Brake Tube Fitting, 0.50 Inch Tube OD To 1/2-14 Male NPT, 90 deg Elbow

For NT100 nylon tubing, it is a no-flare, no-prep style fitting, so you do not need to flare the tube or do special tube prep. It also has built-in tube support, and during assembly the threaded end of the nut needs to face the fitting body.

Both SAE J844 Type A and B standards are covered, along with DOT FMVSS 571.106 compliance, so this isn't just a label. It's rated for NT100 nylon tubing specifically, which is the standard nylon used in air brake lines. Built-in tube support is part of the design, which matters for keeping the connection solid under the flex and vibration that comes with brake line service.

Designed for dependable airline connections, this fitting is made from CA360 brass, which offers fair resistance to vibration. It also handles temperatures from -40F to +200F, so it should hold up well in varied weather conditions.