4.Hardness grade: 8.8s,10.9s ,12.9s
other special materials.
3.materials: made of carbon steel, alloy and stainless steel, aluminum, brass, and
2.Surface finish:zinc plated, HDG, black,plain
1.Specification: M2,M3,M4,M5,M6,M7,M8
featurue
split washer(spring washer ,washers)
split washer(spring washer ,washers)
1.all size and various material
2.good qulaity and price
3.professtional production