3/8" Male national pipe thread. These plugs are perfect for larger tool applications requiring more SCFM. Maximum temperature of 250 degrees Fahrenheit. Air flow of 67 standard cubic feet per minute.
Milton Industries 1/4" Male Body A-Style
Milton Industries 621-11 Re-usable Brass Fitting Male End 3/8" Hose I.d. 5 Pack
1/2" Male End, 1/2" ID Hose Milton Industries 1704-8
Milton Industries 1/4" Male Plug G-Style
Milton Industries 3/8" Male Body M-Style
New Milton Industries 1/2" Male Plug G-Style 1857