... Standard:ASTM, JIS, BS, AS, ISO, GB, Nonstandard bolt High quality Countersunk Head Nylok machine Screw model numberM3.5-6Brand NamePhoriaOriginal of PlaceSuzhou ... supply the Drawing or Photos or Samples to us 1.High quality, competitive price 2.As many factory use stainless steel 200 ... company is specialize in producing various kinds of special screws. High quality Countersunk Head Nylok machine Screw