BBI 221169 Shoulder Screw, Round Socket Head, ASTM A574 Alloy Steel, 5/8 in Dia x 2 in L Shoulder, 1/2-13

BBI Shoulder Screw, Measurement System: Imperial, Round Socket Head, ASTM A574 Alloy Steel, 5/8 in Shoulder Diameter, 2 in Shoulder Length, 1/2-13 Thread, Hex Drive, 5/16 in Drive, UNC Thread, HRC 36-43 Hardness, Plain/Thermal Black Oxide