... Iron,etc Standard; DIN,BSW,JIS,ANSI,GB OEM Hex Weld NutsSize; M4-M16 or at your OptionsMaterial; Stainless Steel, ... all kinds of Fasteners (Nonstandard and Standard) such as Screws ( Weld / Self-tapping / Drilling / Wood / Hexagon/ Countersunk Head / etc ) , Bolts( ... Semi-tubular / Tubular / Blind/ etc.) , Nuts (Copper/ stainless etc.) , Thread Rods and studs and washers. We believe that with Our Years ...