... bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts, wing nuts, ... square nuts, cap nuts.Washers: flat washers, spring washers, lock washers, structural Washers. square washer, bowl washer.Screws: machine ... screws, hex socket head cap screws, wood screws.Rivet: solid rivet, blind rivet, pop rivet.Nails: roofing nails, twist nails, double head nails ...