Hex Head Cap Screw System of Measurement Inch Basic Material Nylon Material Grade Not Graded Fastener Finish Plain Dia./Thread Size 5/16 In.-18 Fastener Length 1 1/4 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Fastener Thread Style Partially Threaded Fastener Industry Standards ANSI/ASME B1.1 1982 Head Type Slotted Hex Min Thread Length 7/8 in Head Height 15/64 in Head Width 1/2 in Package Quantity 10