... ,USS,SAE BS and so on) of material(A2,A4,A3.....) Surface treatment Zinc coat(CR3),Zinc coat(CR6),Yellow zinc ... parts in kinds of standards, specifications and materials (A2,A4,A3,Brass and so on),most of material is imported from ... .35 M39450.48 707.90 M42649.35 974.03 flat washer