Hex Head, Shoulder Screw, Steel, 1/2 in Shoulder Dia., 1 1/2 in Shoulder Length, 3/8-16, Inch/ HEAD STYLE: C1 HEXAGON END ITEM IDENTIFICATION: MRAP M-ATV UI NOMINAL THREAD DIAMETER: 0.375 INCHES THREAD QUANTITY PER INCH: 16 PART NAME ASSIGNED BY CONTROLLING AGENCY: SHOULDER BOLT, HEX HEAD, 1/2 X 1 1/2 SHOULDER 3/8 - 16 ZN SURFACE TREATMENT: ZINC OVERALL THREAD SERIES DESIGNATOR: UNC