Inch Structural Bolt Steel Material Grade A325 Type 1 Fastener Finish Hot Dipped Galvanized Dia/Thread Size 3/4 In.-10 Fastener Length 4 1/2 in Fastener Thread Type UNC (Coarse) Fastener Industry Standards ASTM F3125 Thread Length 1 3/8 in Fastener Thread Direction Right Hand Head Dia 1 1/4 in Head Height 15/32 in Tensile Strength (PSI) 105 000 psi Rockwell Hardness HRC25 Package Quantity 10