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The shape of square nut is square so it also can be called square nut, the standard is DIN557 and material is divided into carbon steel and stainless steel. Square nut is one of the welding nuts which use high temperature to melt some metal welding in the middle of the two products play a fastening role, so the fastening effect of the connection will be better and not easy to loose, it also can be used with bolts together. Square nuts are mainly used in power engineering, traffic engineering, home building materials and other industries.
Performance grade: carbon steel: grade 4/8/10/12, stainless steel A2-50/A4-70/80, etc, STANDARD:DIN; GB; JIS;ISO;BS;ANSI ,MATERIAL:Carbon steel,Stainless steel.
Surface treatment:carbon steel surface treatment is generally boiled black, galvanized, non electrolytic zinc sheet coating, thick galvanized vzd and thick galvanized
Zinc plus sealing (zsml), zinc nickel coating silver (znshl), zinc nickel coating black (zhbh)
Wuxi Zhuocheng Mechanical Components Co., Ltd. is established in 1990, and one group of manufacturing and selling professional fastener
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