... 1018 Standard:ASTM, JIS, BS, AS, ISO, GB, Nonstandard bolt High quality Countersunk Head Nylok machine Screw model numberM3.5-6Brand NamePhoriaOriginal ... the Drawing or Photos or Samples to us 1.High quality, competitive price 2.As many factory use stainless steel 200 or 400 ... . But we can promise that the material weuse is SUS304. 3.If the torsion of the screw is not qualified, it ...