★ Outer Hexagonal Screws are made of high quality (Raw material).They have superior rust resistance and the excellent of oxidation resistance in bad environment like high temperature,cold weather,and high humidity areas,which can ensure long time using. ★ Having enough stress-bearing surface that can be screwed tighter. ★ Fixing component,industrial and construction fasteners.Ideal for use in areas where you need Hexagon Head Bolt Screws. ★ Our screw thread is very sharp,clean and accurate.And the compact thread is not easy to out of shape and slid in the process of rolling.The deep and clear hex sockets and heads can make your working more easily. ★ Suitable for a wide range of applications in alot of different industries such as the automotive industry in applications such as body panelling and bumpers etc, also commonly used in the engineering industry and architecture,Also favoured by the remote control and model making enthusiasts.Also a favourite for many different DIY jobs in and around the home and garage for those jobs., Manufacturer: Yudesun