Plug design has been adopted by most coupler manufacturersConsidered the industrial standardIdentified by the 3/16 inch pilot and flat bottom V-shaped ball grooveConforms to ANSI (NFPA) T3.20.14-1990 dimensions
Tru-Flate 12-537 3/8" Female NPT Plug
Brand: Tru-Flate, Model: 12-537, Size: 3/8"