The hexagon socket bolt is divided into rings according to the top of the head, and there are various types of hexagon socket bolts. According to the material, it is divided into two types: carbon steel and aluminum alloy. Hexagon socket head cap screws with semicircular head, also known as hexagon socket cap screws. The low head hexagon socket bolt has a small flat head and a hexagon socket; there is also a very unique bolt called a headless hexagon socket bolt, that is, a machine screw, a payment screw, and a stop screw. A generic name for a hexagonal bolt without head, but with the same meaning. Of course, there are also some flower-type hexagon socket screws, but they are rarely used and hardly appear in the market. Hexagon socket bolts are generally used in mechanical equipment. Its structure is compact, detachable, and has the characteristics of not being easy to dislocate. The wrench is generally bent 90 degrees. One end is long and the other end is short. When using screws, hold them with your hand. The long sides save a lot of effort and allow for better tightening of screws. The long head has a round mouth friendship head. The screw hole is very easy to insert into the round opening, which is convenient for disassembly and assembly. The manufacturing cost of the outer hexagon is much less than that of the inner hexagon. Another screw head is thinner than the inner hexagon, and some problems cannot be replaced by the inner hexagon. In addition, machines with low cost, low output power, and low precision requirements have fewer inner hexagon bolts than outer hexagon bolts. Do you know how to deal with the sliding contact of the hexagon socket head bolt? The following maijin has a brief understanding. The inner hexagonal screws and outer hexagonal screws cannot be removed. If you want to remove the sliding screws, you can generally try several solutions: 1. Use the "Broken Screw Getter" to try to remove them. 2. Choose an alloy drill slider that is one size smaller than the rolling hexagon socket head bolt. If the screw climbs out, there will be wall-like residues around it, so it should be removed slowly. 3. It can be solved by spark discharge. If the hexagon socket bolts are not easy to move, a portable electric spark machine can be used. After using the above method to disassemble the hexagon socket head bolt, the threaded hole of the original threaded hole may be damaged. 4. If the damage is not large, a standard milling cutter with a matching thread size can still be used normally after a period of time. 5. If the damage is serious, the "steel external thread insert" can be further used for repair under the condition that the wall thickness around the threaded hole is allowed. If the "steel thread insert" is used for maintenance, the strength will not be affected, and even higher than the original thread strength, and the original specification and model of hexagonal socket head bolts are still used.