Non-Standard Nuts|Non-Standard Fasteners Non-Standard Parts Material: Carbon Steel, Copper, Stainless Steel or Specified Thread: metric, coarse, fine, inch Mechanical properties: 4.8,5.8,6.8,8.8,9.8,10.9,12.9 Finish: natural, zinc plated, blackened, nickel plated, chrome plated, hot-dip galvanized