Midland Metal 28086 Barstock Square Head Plug, 3/8 in FNPT, 0.8 in, Brass

Barstock Square Head Plug, Connection Size 1: 3/8 in, Connection Type 1: FNPT, 0.8 in L, Brass, 3/8-18 Thread, 1200 psi, 0.43 in Hex, For Use With: Brass, Bronze, Copper, Steel, Aluminum, and Iron Pipe, -65 to 250 deg F