1. Screw length and specifications.
The total length of the screw should be greater than 1.2mm of the screw cap and the depth of the screw hole should not exceed 40mm. When working, be sure to check whether there are obstacles within 10mm around the screw holes, because obstacles will definitely affect the operation in production. In addition, the surface of the screw hole must be an inclined plane with a flat surface of less than 30 degrees.
2. Whether it has a gasket.
If the screw has a gasket and the gasket is larger than the screw cap, then the diameter of the gasket should prevail, so that it will not be flipped in the feeding pipe. If the screw does not reach the total length of the screw more than 1.2mm of the screw cap warp, then the feeding method should take adsorption or other methods.
3. The thread of the screw.
The thread of the screw is not the same, there is a triangular self-tapping locking screw, which is consistent with the pitch and angle of the metric thread, but the cross-section is a triangle, and there are two parameters to control the locking of D and C values. The locking function can be achieved.
