Through-hole nutmanufacturers teach you how to skillfully use non-standard nuts.

1. Firstly, the sludge on the surface of the broken screw head is removed and the center of the cross section is killed by the central brass. Then the drill with diameter of 6-8 mm is mounted with an electric drill to drill holes in the center of the cross section. Attention should be paid to drilling holes through. After drilling through the hole, take off the small bit and replace it with a 16mm diameter bit. Continue to expand the hole of the broken bolt and drill through it.

2. Take the electrode with diameter less than 3.2mm and use medium and small current to remove half of the whole length of the bolt at the beginning of surfacing welding from inside to outside in the borehole of the broken bolt. Start surfacing with arc starting not too long to avoid burning through the outer wall of the broken bolt. After surfacing to the upper end face of the broken bolt, continue surfacing with a diameter of 14-16mm high. 8-10 mm cylinder.

3. After surfacing, hammer the end of the broken bolt with a hammer to make it vibrate along its axis. Because of the heat generated by the arc before and the subsequent cooling, coupled with the vibration at this time, the broken bolt will loosen between the threads of the body.

4. When a trace of rust leaks from the fracture after knocking, the M18 nut can be taken and welded on the stud of surfacing welding.

Blind hole nut

Rivet nuts can effectively solve the problem of "yellow water" after a long period of time, and effectively eliminate the problem of virtual welding.

2. Solve the problem that flanging tapping screw connection is not firm, improve reliability, reduce the noise caused by loosening connection, can be more reliable, reliable, and easy to maintain.

3. Improve production efficiency, reduce the number of workers, reduce labor costs. (Because riveting nuts are riveted by pressing group riveting with punch, the single welding method is completed at one time, which not only has high efficiency, but also reduces the use of points.)

4. Reduce the use of factory land.

5. Rivet nuts instead of flanging tapping can reduce material by 20% and save energy.

Rivet nut can effectively solve the problem of air-conditioning shell, long-term, wind, rain and sun after the flow of "yellow water" and effectively eliminate the problem of virtual welding.

Solve the problem of unstable connection of flanging tapping (or self tapping nail), improve the reliability of connection, effectively reduce the noise caused by loose connection, make grounding more reliable, reliable and convenient to maintain.