Why Is The Truss Head Machine Screws Easy To Slip?

Why is it that the truss head machine screws that I just bought is easy to slip? I have never used it. Why does this happen?

In most people’s impressions, the truss head screw slip is mainly due to the use of too many times. But now the screw that I just bought is slippery. The newly bought screws are slippery, mainly for the following reasons:

1. The material of the truss head machine screws is not good.
In order to save costs, some manufacturers will use the second material in production, and the truss head screw produced will not be qualified in terms of material.

2. The method used is not appropriate.
It is awkward when the screw is not aligned or screwed in.
3. The length of the screw is not enough.
Before buying the screw, the length of the measurement is not allowed or the length is estimated to be purchased. The length of the truss head machine screws that is bought is not up to standard. Or the length of the measured length is accurate, but the seller sends the wrong length when shipped, and the length of the screw is not reached, which will cause sliding thread.
4. The strength and hardness of the screw are not enough to withstand the corresponding torque.
Before the purchase, the strength and hardness of the screw were not confirmed with the buyer, so that the purchased screw did not reach the corresponding torque, causing the screw to slip.
5. The strength of the screw is beyond the standard load of the screw, causing slippage.
The force used when screwing the screw is too large and exceeds the standard load of the screw, which may cause the truss head machine screws to slip or break.
6. Threaded holes or threaded threads are not standard and are not tightly coupled to each other.
There was a problem with the machine during production, which may cause the thread to be out of standard and not found in time. Or the seller is not producing according to the standard.
7. The screw itself does not stop, it will also cause the consequences of sliding.
At the end of the thread decay, there is no stop test to see if it meets.
8. If the outer diameter of the thread is too small, it will slip.
Production may be produced in accordance with the following tolerances. Causes the outer diameter to be too small.

The above reasons will cause the newly bought truss head machine screws to slip.

If you want to customize truss head machine screws, please send an email: annie.li@szsst88.com