Name: Screw bolts nuts, Turning parts, CNC machine parts Material: Brass Surface finish: Plated gold, diamond knurling Main equipment manufacture: Automatic Machine or CNC precision machine We can make tolerance diametion: -/+0.02mm for automatic machine, -/+0.005mm for CNC precision machine And the outdiameter we can make: 1mm-38mm, length we can make 200mm Suitable used in medical components, auto spare parts, electronic, optical components. We are ISO9001: 2008, registered company. Also with RoHS directive. OEM or ODM orders are welcome.