What are the precautions for countersunk head screw installation
Dec 16,2022 /
BY DEVELOPERS
1. The reaming taper of countersunk head screws should be 90°, and guarantees should be given. It is better to be less than 90°, not greater than 90°. This is a key trick.
2. If the thickness of the sheet metal is smaller than the thickness of the head of the countersunk head screw, you can replace the screw with a smaller size, or rather make the hole smaller than expand the hole, so that the diameter of the bottom hole will become larger and the parts will not be pressed tightly.
3. If there are multiple countersunk head screw holes on the part, the processing must be more accurate. Once the drilling is crooked, the assembly will be ugly, but as long as the error is not large, it can be tightened completely, because when tightening, if the diameter of the screw is not very Large (approximately no more than 8mm), when there is an error in the hole pitch, the screw head will be deformed due to force when it is tightened or it will be tightened.
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