... and ISO Ts16949 4.color,length,diameter 1.stainless steel square nuts2.stainless steel square nuts3.passed ISO 9001 and ISO Ts169494.color,length ... ,diameterstainless steel square nuts(steel nuts,nuts) We can produce the nuts according with DIN557 ... other standard,which material is sus304 and sus316,low carbon steel ,medium carbon steel and high carbon ...