1/2-13 Nylon Insert Hex Lock Nuts Locknuts, 304 Stainless Steel 18-8, Black O…
Hex lock nuts have internal machine threads, for use with machine thread bolts and screws. 10 x Hex Lock Nuts. Hex Socket Drive: 3/4″. Material 18-8 (304) Stainless Steel. Material : Stainless Steel 18-8 (304), high hardness and provides excellent rust resistance, making it long last use.