SS sharp nut cap Dia:Min 2mm Surface :BO SGS audited More than ... fastener field 1,Name:SS sharp nut cap;SS nut cap;Sharp nut cap 2,For the similar nut cap,what can we do ... ?(1), Ability for the material of this kind of nut cap: 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 ... machined hardware fastener ,especially the cutting/turning parts. SS sharp nut cap