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 M6-1 Minimum Thread Length 11 mm Shoulder Length 55 mm Shoulder Length Tolerance -0.0 mm to +0.25 mm Shoulder Diameter 8 mm Shoulder Diameter Tolerance -0.036 mm to +0.0 mm Pack Size Small Pack Head Height 5.5 mm Head Diameter 13 mm Dimensional Standards ISO 7379