... , grade 8UNC and UNF5. Standard hex nut, hex jam nut, 6. heavy hex nut, heavy hex jam nut7. ASTM A194 ... roofing bolts.Nuts: spring nuts, T nuts, K nuts, rivet nuts, cage nuts, lock nuts, hex nuts, hex flange ... screws, hex socket head cap screws, wood screws.Rivet: solid rivet, blind rivet, pop rivet.Nails: roofing nails, twist nails, double head ... Best Choice for You astm a325 stainless steel hex nuts