... ISO9001:2008; Tolerance:+/-0.0001mm ECO-material stainless steel piston pin bushing with screw thread Specifications:1) Suitable for ... hardening, carbonadoing, others optional can be as requirements6)Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV ... centers, High-precise Stainless Steel products, Pins made of Iron, Copper and Aluminum, and so on, with an output ...