Inch, Structural Bolt, Steel, Fastener Finish Plain, Dia./Thread Size 1 1/4 In.-7, Fastener Length 4 1/2 in, Fastener Thread Type UNC (Coarse), Fastener Industry Standards ASTM F3125, Thread Length 2 in, Fastener Thread Direction Right Hand, Head Dia. 2 in, Head Height 25/32 in, Tensile Strength (PSI) 150,000 psi, Rockwell Hardness HRC25, Package Quantity 5