Shoulder Screw Shoulder Screw Type Locking Shoulder Screw Head Type Standard Drive Type Socket Material Alloy Steel Material Grade/Class Class 12.9 Finish Plain System of Measurement Metric Thread Size M8-1.25 Minimum Thread Length 13 mm Shoulder Length 30 mm Shoulder Length Tolerance -0.0 mm to +0.25 mm Shoulder Diameter 10 mm Shoulder Diameter Tolerance -0.036 mm to +0.0 mm Pack Size Small Pack Head Height 7 mm Head Diameter 16 mm Dimensional Standards ISO 7379