Socket Head Cap Screw, Head Type Standard, System of Measurement Inch, Drive Type Socket, Drive Size 3/16 in, Material Steel, Finish Black Oxide, Thread Size 1/4 In.-20, Minimum Thread Length 1 in, Fastener Length 2 1/2 in, Head Height 0.25 in, Head Diameter 0.375 in, Pack Size Bulk Pack, Thread Style Partially Threaded, Special Features Not Applicable, Countersink Angle Not Applicable, Dimensional Standards ASME B18.3, Flange Diameter Not Applicable, Flange Thickness Not Applicable