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Bolts Machinery Fittings Non-standard Bolt Product Description Hailifan Mechanical Fittings Factory is equipped with advanced equipments. Adopting advanced tech in product design and manufacture, and strictly following the criteria of ISO9001 guarantee the excellent performance of we products. Hailifan Machine Accessories Factory offer products in various types and ranges. The regular used raw material and finished products are always in stock for provide our customers the biggest variety and quantity with the shorest delivery time. Customers can reduce the purchasing process and purchasing cost to increase their purchasing efficiency. Hailifan Machine Accessories Factory of products:Machinery Fittings,hardware Fittings,hardware,machinery parts,Machinery processing,metal processing,Bolt,Valve Fittings,Auto Fittings,Engineering Fittings,Hardware tools Etc. Hex Bolt DIN931 DIN933 DIN558 DIN601 DIN960, DIN961 Hex Socket Head DIN912 Grade:4.8, 6.8, 8.8, 10.9, 12.9 ANSI/IFI, B.S, JIS Available FInish:Plain, Zinc Plated, Black, H.D.G.