... , alloyFinishPlating, Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon socket screws: +0.0004/-0, +0/-0.0004 inchStandard DIN912,913 ... certified manufacturer – Freerun Group Strict quality control for hexagon socket screws by IQC, IPQC, FQC, SPC, PCP, PPAP ... your small demand on hexagon socket screws to help you on urgent need to prevent excess stock. CONTACT US TODAY ...