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Natural color bolt

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Product Name: natural color bolt


Product model: head opposite side length 36.41.46mm, head thickness 18.15mm-16.5mm, 13.5mm-15mm, length 110230240260150200250350160,40,50100320380,60180,70170210220,80280130190,90140120500400450180


Strength grade: steel carbon grade 4.8


Surface treatment; Natural color


Product use; Machinery industry, construction industry, power industry, transportation industry, bridge engineering, steel industry, 

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