Midland Metal 28203 Heavy Duty Cored Hex Plug, 3/8 in MNPT, 0.72 in, Brass

Cored Hex Head Plug, Connection Size: 3/8-in, Connection Type: Male NPTF, 0.72-in L, Brass, 3/8-18 Thread, 1200 psi, 0.68-in Hex, For Use With: Brass, Bronze, Copper, Steel, Aluminum, and Iron Pipe, -65 to 250 deg F