... Standard: DIN/ANSI/JIS/BS/IFI Zinc Plated Carbon Steel Hex Nuts 1. Metric Sizes Regular Supply M5, M6, M8 ... grade 8 UNC and UNF7. Standard hex nut, hex jam nut, 8. heavy hex nut, heavy hex jam nut9. ASTM A194 2H, ... Nickle, Chrome, Dacromet, Cr3+,Cr6+ Other Material Options for hex nut:Stainless Steel SS201, SS301, SS304, SS316Grade A2-70. ... box, blister card options Zinc Plated Carbon Steel Hex Nuts