Shoulder Screw, Shoulder Screw Type Standard Shoulder Screw, Head Type Standard, Drive Type Socket, 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 6 in, Shoulder Length Tolerance +/-0.005 in, Shoulder Diameter 5/16 in, Shoulder Diameter Tolerance -0.002 in to -0.004 in, Pack Size Small Pack, Head Height 7/32 in, Head Diameter 7/16 in, Dimensional Standards ASME B18.3