Shoulder Screw Shoulder Screw Type Standard Shoulder Screw Head Type Standard Drive Type Socket Material Alloy Steel Finish Plain System of Measurement Metric Thread Size M20-2.5 Minimum Thread Length 27 mm Shoulder Length 60 mm Shoulder Length Tolerance -0.0 mm to +0.25 mm Shoulder Diameter 24 mm Shoulder Diameter Tolerance -0.036 mm to +0.0 mm Pack Size Small Pack Head Height 16 mm Head Diameter 36 mm Dimensional Standards ISO 7379 Tensile Strength 140 000 psi