Hex Head Cap Screw System of Measurement Inch Basic Material Steel Material Grade Grade 8 Fastener Finish Zinc Yellow Dia./Thread Size 1-1/4 In.-7 Fastener Length 8 1/2 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Fastener Thread Style Partially Threaded Fastener Industry Standards ASME B18.2.1 Head Type Hex Min Thread Length 2 3/4 in Head Height 25/32 in Head Width 1 7/8 in