Discription: 1)Hot-dip galvanized thread resist rust 2)Hex locknut 3)Widely used in office,commercial,projects etc construction 4)Mainly as the fittings of EMT 5)Specification: CAT# SIZE 601 1/2" 602 3/4" 603 1" 604 1-1/4" 605 1-1/2" 606 2"