Shoulder Screw, Shoulder Screw Type Standard Shoulder Screw, Head Type Ultra-Low-Profile Standard, Drive Type Socket, Material Stainless Steel, Material Grade/Class 316, 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 -0.001 in to +0.0 in, Pack Size Small Pack, Head Height 3/64 in, Head Diameter 1/4 in