BBI 221049 Shoulder Screw, Round Socket Head, ASTM A574 Alloy Steel, 3/8 in Dia x 3/8 in L Shoulder, 5/16-18

BBI Shoulder Screw, Measurement System: Imperial, Round Socket Head, ASTM A574 Alloy Steel, 3/8 in Shoulder Diameter, 3/8 in Shoulder Length, 5/16-18 Thread, Hex Drive, 3/16 in Drive, UNC Thread, HRC 36-43 Hardness, Plain/Thermal Black Oxide