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Fastener knowledge: bad head shape of screw head
From the feedback from customers, it can be found that there are often products with poor screw head shapes. What are the bad head shapes of the screw heads? Which screw heads are bad? The following China Standard Parts Network explains as follows:
1. The head of the screw is crooked. That is, the head of the screw is deviated. It's crooked and not straight. The fight was broken. It's not pretty.
2. The size tolerance of the screw head is too large. That is, the head diameter size standard does not meet customer requirements. (Guide: Expansion bolt specifications and points for attention in construction)
3. There are burrs or cracks on the head of the screw. Simply put, the head of the screw is headshot.
4. Screw head type cross groove problem, such as the cross groove is not deep enough, the size of the cross groove is problematic.
Regarding the bad head shape of the screw head, we must find out the reason, correct it appropriately, return the screw to a perfect shape, and let the screw get better performance.
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One-stop manufacturer for all kind of stamping products and CNC lathed products.