High quality Hexagon head bolts: Sizes under M22 produce by Cold forging, M22-M64 produce by hot forging. Hexagon socket bolts are also called cup-head hexagon socket bolts. The shape is cylindrical head and the groove is hexagon socket polygon. Hexagon socket head bolts are widely used in mechanical installation because they are easy to fasten and disassemble, and are not easy to slip. Our company is specialized in making fasteners, we can provide a variety of bolt,nut,Anchor.like:Hex Bolt,Hex Nut ,Wire Rope.We have our own warehouse, standing stock, we can open molds to make products through the drawings provided by customers.we provide the best service.