Shoulder Screw Shoulder Screw Type Standard Shoulder Screw Head Type Standard Drive Type Socket Material Alloy Steel Finish Plain System of Measurement Inch Thread Size 1/2 In.-13 Minimum Thread Length 3/4 in Shoulder Length 3 in Shoulder Length Tolerance +/-0.005 in Shoulder Diameter 5/8 in Shoulder Diameter Tolerance -0.004 in to +0.0 in Pack Size Small Pack Head Height 3/8 in Head Diameter 7/8 in Dimensional Standards ASME B18.3 Tensile Strength 140 000 psi