metal bolts, nuts, and washers. fasteners equipment. hardware tools. stud bolt, flat washers, hex nuts, and hex head bolts in

accessory allen automobile automotive background bolt collection construction engineering fastener female fix galvanized gear gray hardware head hex hexagon high industrial industry iron key kit machine male many mechanic metal nut part partners production repair screw set shiny shop spacer steel strength stud technical threaded tools torque washer workshop worm zinc