... copper, alloyFinishPlating, Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon socket screws: +0.0004/-0, +0/-0.0004 inchStandard DIN912,913 ... can quote you a price immediately.OEM, ODM hexagon socket screws are provided per customers' application. You name it ... allowed. When it is completely locked in, its smooth surface will cause no scratch for other items, however, a ...