Thread Length 3 1/4 in, Head Height 15/16 in, Head Width 2 1/4 in
1, Head Type Hex, Min.2.Grade 8, 1-1/2"-6 Hex Head Cap Screw, Black Oxide Steel, 4 in L Hex Head Cap Screw, System of Measurement Inch, Basic Material Steel, Material Grade Grade 8, Fastener Finish Plain, Dia.-6, Fastener Length 4 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B18.