... UN/Metric/NPT threads Many of our precision parts used in Penumatic and Hydralic, Automation & Sensor systems are exported to Germany ... , France, USA.Precision: +/-0.002mm in tolerance; +/-0.01~+/-0.005mm of concentricity, Ra 0.4 ... , Stainless Steel, BrassFinish: Polishing/Grinding, Electroless Nickel Plating, Passivation, etc Hydraulic Parts