Shoulder Screw Shoulder Screw Type Standard 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 M16-2 Minimum Thread Length 22 mm Shoulder Length 55 mm Shoulder Length Tolerance -0.0 mm to +0.25 mm Shoulder Diameter 20 mm Shoulder Diameter Tolerance -0.036 mm to +0.0 mm Pack Size Small Pack Head Height 14 mm Head Diameter 30 mm Dimensional Standards ISO 7379