Shoulder Screw Shoulder Screw Type Precision Shoulder Screw Head Type Standard Drive Type Phillips Material Stainless Steel Material Grade/Class 18-8 Finish Plain System of Measurement Inch Thread Size 1/4 In.-20 Minimum Thread Length 7/16 in Shoulder Length 1/2 in Shoulder Length Tolerance -0.0 in to +0.002 in Shoulder Diameter 5/16 in Shoulder Diameter Tolerance -0.0015 in to +0.0 in Pack Size Small Pack Head Height 7/32 in Head Diameter 1/2 in