... brass, copper, alloyFinishPlating, Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon socket screws: +0.0004/-0, +0/-0.0004 inchStandard DIN912,913 ... we can quote you a price immediately.OEM, ODM hexagon socket screws are provided per customers' application. You name it, ... strength.Sizes list: Metric SeriesM1.43~12M1010~370 Inch Series#01/8~1/23/83/8~12"M1.63~12M1212 ...