Socket Head Cap Screw, Head Type Button, System of Measurement Inch, Drive Type Socket, Drive Size 3/16 in, Material Alloy Steel, Finish Chrome Plated, Thread Size 5/16 In. -18, Minimum Thread Length 1/2 in, Fastener Length 1/2 in, Head Height 0.166 in, Head Diameter 0.547 in, Pack Size Small Pack, Thread Style Fully Threaded, Special Features Not Applicable, Countersink Angle Not Applicable, Dimensional Standards ASME B 18.3, Flange Diameter Not Applicable, Flange Thickness Not Applicable. This item has been restricted from sale in the following state (s): []