... , heavy hex bolts, hex flange bolts, carriage bolts, stud bolts, eye bolts, U bolts, masonry bolts, roofing bolts.Nuts: spring nuts ... , T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts, wing nuts, weld nuts ... , square nuts, cap nuts.Washers: flat washers, spring washers, lock washers, structural Washers. square washer, bowl washer.Screws: machine screws ...