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 3/8 In.-16, Minimum Thread Length 5/8 in, Shoulder Length 1 3/4 in, Shoulder Length Tolerance +/-0.002 in to -0.005 in, Shoulder Diameter 1/2 in, Shoulder Diameter Tolerance -0.