Inch Tower Bolt Steel Fastener Finish Hot Dipped Galvanized Dia/Thread Size 3/4 In.-10 Fastener Length 2 1/2 in Fastener Thread Type UNC (Coarse) Fastener Industry Standards ASTM A394 Thread Length 2 1/2 in Fastener Thread Direction Right Hand Head Dia 1 1/8 in Head Height 1/2 in Tensile Strength (PSI) 74 000 psi Rockwell Hardness HRB80 Package Quantity 10