Inch Structural Bolt Steel Fastener Finish Hot Dipped Galvanized Dia/Thread Size 5/8 In.-11 Fastener Length 2 3/4 in Fastener Thread Type UNC (Coarse) Fastener Industry Standards ASTM 563 ASTM F3125 Thread Length 1 1/4 in Fastener Thread Direction Right Hand Head Dia 1 1/16 in Head Height 25/64 in Tensile Strength (PSI) 105 000 psi Rockwell Hardness HRC25 Includes Heavy Nut Package Quantity 10