Metal machining and stamping insert Surface :BO/ Zn SGS audited More than 20 years experience in special fastener field .1,Name:Metal machining and stamping insert;metal insert;machining and stamping insert 2,For the similar insert,what can we do ?(1), Ability for the material of this kind of insert: 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, ...