1.High Hardness 2.High precision 3.No mini order 4.Delivery fast 5.OEM Design Freerun has ... brass, copper, alloyFinishPlating, Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon socket screws: +0.0004/-0, +0/-0.0004 inchStandard DIN912,913 ... ISO certified manufacturer – Freerun Group Strict quality control for hexagon socket screws by IQC, IPQC, FQC, SPC, PCP, PPAP to ...