1,Name:Stainess steel toothed washer;Stainess steel washer;Toothed washer2,For the similar washer,what can we do ?(1), Ability for the material of this kind of washer:Grade3.6,4.6,4.8,5.6,6.8,8.8,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015,1016,1020,1045,etcAlloy...