307 Type Three Hole Self Tapping Thread Insert Bushing M5 * 0.8 * M8 * 7L

307 type three hole self tapping socket threaded bushing M5 * 0.8 * M8 * 7L

Precautions for installation of self tapping thread sheath:
1. According to different processing materials, refer to the drilling size specification, carry out pre drilling processing. When the hardness of the corresponding material is high, please slightly increase the bottom hole within the scope of drilling.
2. The slotted end is downward to completely install the self tapping screw sleeve into the front end of the tool, and the workpiece must be contacted vertically. When loading (1-2 pitch), please make sure that it is aligned with the bottom hole, and never tilt. When the tilt is found, please do not reverse the tool and adjust it again. When it comes to 1 / 3-1 / 2, it is not allowed to start again. In addition, please do not reverse the rotation of the tool, otherwise it will cause product failure.
3. When installing the self tapping thread sheath, tap the thread for 2-3 turns to play the role of installation guidance and avoid installation screw in tilt. Do not attack the whole tooth, otherwise the installed screw sleeve will not play a fastening role.

Self tapping screw sleeve has teeth inside and outside. It is embedded in soft materials such as plastic, aluminum cast iron and copper to form internal thread holes with high strength. Self tapping screw sleeve (self tapping screw sleeve) can also repair damaged internal thread.