... products, 1. DIN 660---Dome head rivet; 2. DIN 661---Countersunk head rivet; 3. DIN 302--- Countersunk head rivet; 4. DIN 662--- Mushroom ... , roofing bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange nuts ... set screws, hex socket head cap screws, wood screws.Rivet: solid rivet, blind rivet, pop rivet.Nails: roofing nails, twist nails, double head nails ...