... : Item NameOEM non-standard stainless steel bolt and nut ,high precision fastener Material1.Stainless steel:303/304/316/412/ ... , Planning , Grinding , Boring , Wire-electrode cutting ,and tappingQuality controlProfessional precision manufacture for more than 6 years.1. Quality control ... is 0.1%. Imported material 100%.2. Reasonable price , Precision made.Experience & Reasonable QC that you can reply ...