Variation of the screw Angle results in reduction of purchase of the locking interface, or cross-threading the head.

螺钉角度的变异会致使锁定界面的减少或跨螺纹的头。

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Variation of the screw Angle results in reduction of purchase of the locking interface, or cross-threading the head.

螺钉角度的变异会致使锁定界面的减少或跨螺纹的头。

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