Infly Fasteners is a professional manufacturer and factoy of hex flange bolt, the standard have DIN6921, according to customer's requirement we can do Flat head and Concave head in hexagon head, and with the serrated or no. About DIN6921 Hex Flange Bolt, we can do: Size: dia.M6-M12, length. 20-200mm Material: class 4.8-8.8, carbon steel Q195, 1008, 1035, 10B21 Surface: self colour, white zinc, blue zinc, yellow zinc, black, H.D.G. Packing: carton bluck 20KG-25KG and then on pallet.
