Fastener knowledge: why the screw head is not round?

In a hardware manufacturing factory, it is sometimes found that among the many screws produced, the screw heads of many screws are not very round. What is going on? What is the reason why the screw heads produced are not very round? The screw heads are not very round. There are many reasons for the roundness. China Standard Parts Network will introduce the main reasons why the screw head is not round. (Guide: The technical requirements of fasteners are decisive)

1. The head of the hardware screw is not round. It may be the screw die, that is, the screw die has not been adjusted properly. The first master did not adjust the mold properly, resulting in deviations in output. This leads to the problem that the screws produced are not round.

Second, the mold head is digging out of the way. The die head type does not meet the screw head standard.

Third, there is too much oil on the production machine, which is not conducive to production in all aspects.

Fourth, the gap between the mold and the mold hole is too large and not parallel after being locked.

Fifth, the material of the screws is not good, and there are too many impurities. Not conducive to production.

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