... Welding Nuts Size;M4-M16 Or at your Options Material; Stainless Steel,Iron,etc Standard; DIN,BSW,JIS,ANSI,GB OEM Hex Welding ... Countersunk/ Cup Head / etc ) , Rivets (Semi-tubular / Tubular / Blind/ etc.) , Nuts (Copper/ stainless etc.) , Thread Rods and studs and washers. We ... believe that with Our Years' Experiences in Manufacturing and Export ,We are Able ...