... fastener field 1,Name: Steel special nail;Steel nail;Steel nail2,For the similar nail,what can we do ?(1), Ability ... for the material of this kind of nail: Grade3.6,4.6,4.8,5.6,6. ... 2),Ability for the surface finish: ElectroplateZinc plated(while,colour,dacroment),Nickel plated,copper plated,gold plated,chrome(3+Rohs ... fastener ,especially the cutting/turning parts. Steel special nail