Hex Head Cap Screw System of Measurement Inch Basic Material Steel Material Grade Grade 2 Fastener Finish Plain Dia./Thread Size 3/8 In.-16 Fastener Length 5/8 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Fastener Thread Style Fully Threaded Fastener Industry Standards ASME B18.2.1 Head Type Hex Min Thread Length 5/8 in Head Height 15/64 in Head Width 9/16 in Package Quantity 50