Shoulder Screw Shoulder Screw Type Standard Shoulder Screw Head Type Standard Drive Type Socket Material Stainless Steel Material Grade/Class 316 Finish Plain System of Measurement Inch Thread Size #4-40 Minimum Thread Length 5/32 in Shoulder Length 1 1/2 in Shoulder Length Tolerance +/-0.005 in Shoulder Diameter 1/8 in Shoulder Diameter Tolerance -0.002 in to -0.004 in Pack Size Small Pack Head Height 1/8 in Head Diameter 1/4 in Dimensional Standards ASME B18.3