... special fastener field 1,Name: Plain steel hanger;Steel hanger;Plain hanger2,For the similar hanger,what can we do ?(1), Ability for ... the material of this kind of hanger: Grade3.6,4.6,4.8,5.6,6.8 ... ,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015,1016,1020 ...