... weld nut 1) Categories: square, two point, three point, three point, four point abnormity 2) Material: carbon steel an Forging ... , constructionand various machinery2) Categories: square, two point, three point, three point, four point abnormity3) Material: carbon steel, stainless steel, quality ... auto trailers hitch ball production flowing. High stating point, high technique and high quality is our ...