Interstate Pneumatics 3/8 inch Automotive Steel Coupler Plug x 1/4 inch Female NPT series plugs are forged from tool steel, heat treated and zinc plated to increase hardness, durability and corrosion resistance. These plugs are interchangeable with the automotive (Tru-flate) standard series plugs produced by other manufacturers. Maximum operating pressure 300 PSI.
- Plug Body: 3/8″
- Threads: 1/4″ NPT Female
- Type: Automotive (Tru-Flate)
- Body: Forged tool steel, heat treated and zinc plated