... nut , slotted nut , round nut ,wing nut , eye nut ,lock nut and other special nut Materials: carbon steel, alloy steel, stainless steel ... on Surface treatment: plain, passivate, black, ZP, YP and HDG, Dacaromet Size range: M4 to M30 made of cold ... M100 made of hot-forming Standards: DIN, ANSI, BS, JIS and nonstandard (according to customer's drawings or samples) Packing: bulk ...