Steel pins 1.Material:steel 2.Surface treatment:zinc plating 3.Normal Dia:1mm-13mm, length6-140mm 4.cheap and good perform Steel pins spring pins factory A. Produce info. 1.Standard DIN94 , GB91, ISO1234, JIS B13512.Material C1005-C1022 steel (unless noted), 18-8 stainless steel, copper 3.Surface Finish zinc plate, plain finish, black oxide, cadmium plated and other as per need.4.Normal dia 1mm- ...