Inch Structural Bolt Steel Fastener Finish Hot Dipped Galvanized Dia/Thread Size 7/8 In.-9 Fastener Length 3 1/4 in Fastener Thread Type UNC (Coarse) Fastener Industry Standards ASTM 563 ASTM F3125 Thread Length 1 1/2 in Fastener Thread Direction Right Hand Head Dia 1 7/16 in Head Height 35/64 in Tensile Strength (PSI) 105 000 psi Rockwell Hardness HRC25 Includes Heavy Nut Package Quantity 5