1,metal good surface polishing nuts 2,Material:stainless steel& carbon steel 3,Machined to Drawing ... or Samples 4,ISO, MTC metal good surface polishing nuts Production range:We are a professional manufacturer of die casting ... ’ requirement.4, Surface roughness: Ra0.8-3.25, Weight: ranging from 0.50g to 10000kg6, Surface finish: polishing, oiled (rust-prevented ...