Shoulder Screw Shoulder Screw Type Locking Precision Shoulder Screw Head Type Standard Drive Type Socket Material Stainless Steel Material Grade/Class 18-8 Finish Plain System of Measurement Inch Thread Size #4-40 Minimum Thread Length 5/32 in Shoulder Length 1/2 in Shoulder Length Tolerance -0.0 in to +0.002 in Shoulder Diameter 1/8 in Shoulder Diameter Tolerance -0.0015 in to +0.0 in Pack Size Small Pack Head Height 1/8 in Head Diameter 1/4 in