Socket Head Cap Screw, Head Type Standard, System of Measurement Inch, Drive Type Socket, Drive Size 1/4 in, Material PEEK, Material Grade/Class Not Graded, Finish Plain, Thread Size 5/16 In. -18, Minimum Thread Length 1/4 in, Fastener Length 1/4 in, Head Height 0.312 in, Head Diameter 0.312 in, Pack Size Small Pack, Thread Style Fully Threaded, Special Features Not Applicable, Countersink Angle Not Applicable, Dimensional Standards ANSI/ASME B 18.3, Flange Diameter Not Applicable