1.High Hardness 2.High precision ... , Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon socket screws: +0.0004/-0, +0/-0.0004 inchStandard DIN912 ... FQC, SPC, PCP, PPAP to provide customers with quality hexagon socket screws. We would support your small demand ... CONTACT US TODAY! 1) Various kinds of screws available 2) Can be made with different tensile strength 3 ...