This is a custom M12 EJOT PT × 47mm Torx screw, the screw thread has had crooked during produced.

Here we summarize some reason why screw thread will be crooked during produced.

1. Machine Error: If the machine that produces the screw is not properly calibrated or maintained, it may produce screws with uneven or misaligned threads.

2. Material Defects: If the material used to make the screw is of poor quality or contains impurities, it may lead to crooked or misaligned threads during the production process.

3. Incorrect Tooling: If the tooling used to manufacture the screw is not designed or set up correctly, it may produce screws with crooked threads.

4. Operator Error: If the operator is not adequately trained or experienced, they may make mistakes during the production process that result in screws with crooked threads.

5. Design flaws: If the design of the screw is flawed, it may be more prone to producing crooked threads during the manufacturing process.

To prevent screws from becoming crooked during production, it’s important to use high-quality materials and well-maintained equipment, as well as ensuring proper training and expertise of the operators. Regular inspection and maintenance of machines and tooling can also help identify and address any issues before they result in defective screws.