1. Use the "broken screw extractor" to try to take it out.
2. Use an alloy drill bit that is one size smaller than the sliding hexagon socket bolt. If the screw is drilled out, there will be wall-like residue around it, so it must be removed slowly;
3. It can be treated with electric sparks. If the hexagon socket bolts are not easy to move, you can try a portable spark machine. After using the above method to remove the hexagon socket bolt, the internal threaded hole of the original threaded hole may be damaged:
4. If the damage is not serious, the standard taps with corresponding thread specifications can still be used normally after a period of time;
5. If the damage is serious, the "steel threaded insert" can be used for further repair if the wall thickness around the threaded hole allows. The use of "steel thread inserts" for maintenance will not affect the strength, even stronger than the original thread, and still use the original specifications of hexagon socket bolts.
