... M1~M20 Material: CS , SS... Carbon steel Zinc Plated Parallel Pins DIN7979 , DIN6325 Parallel Pins1. Material : carbon steel , stainless steel , alloy steel ... 2. Diameter: M1~M203. Lenght: 3mm~500mm4. Finish : plain , zinc plated , black , chromate ... specifications or send us your drawings and samples Zinc Plated Carbon steel Parallel Pins