... 0.002mm 6.Angle clearance:R0.03mm Item Precision thread stainless steel parts Material Steel ,Stainless steel, ... , BS,NF,GB and so onTolerance +/-0.005 or as per customer’s drawings.Surface roughness ... lathe, CNC lathes machine , CNC milling machine , Milling machine , Grinding machine , Tapping machine , Thread rolling machine , Drilling machine, Stamping machine and etc.Quantity control ...