Socket Head Cap Screw, Head Type Standard, System of Measurement Inch, Drive Type Torx Plus, Drive Size 30IP, Material Alloy Steel, Material Grade/Class Class 12.9, 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 Small Pack, Thread Style Partially Threaded, Special Features Not Applicable, Countersink Angle Not Applicable, Manufacturer Location Made in US, Material Quality Standards ASTM