... :2008; Tolerance:+/-0.0001mm ECO-material stainless steel piston pin bushing with screw thread Specifications:1) Suitable for various automotive, electronic ... , high speed CNC machine, Sodick wire EDM, etc. 3)Quality control equipments: roundness meter, projector meter, microscope, gear-test meter, surface ... over 1 million pieces per month. stainless steel piston pin bushing with screw thread