Special Screws & Multi-stroke Screws
With the characteristics of high tension and high strength, the maximum strength is up to 10.9 level or more.
Material: Black iron, stainless steel, alloy steel, copper and aluminum etc.
Surface Treatment: Zinc, zinc yellow, zinc-nickel plated, chromium, Darcrotizing etc.
Size：3/8~5/8 M12~M14
