... ISO9001:2008; Tolerance:+/-0.0001mm ECO-material stainless steel piston pin bushing with screw thread Specifications:1) Suitable for various automotive, electronic, ... Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others optional7) Products range: standard component ... over 1 million pieces per month. stainless steel piston pin bushing with screw thread