How to check the size of the screw when it is purchased

When you buy a lock screw, do you measure it again? In this way, the Geng family can rest assured that it can be used in the product.

In general, take it back and simply measure whether the size meets your needs, so there is generally no big problem, the manufacturer of the screw must be comprehensively checked before delivery.

In general, different types of locking screws have different measurement specifications.

1, for hex screws, Phillips screws and other types of screws, measure the diameter and length of the thread (except the head)

2. For countersunk or flat head screws, measure the length from the thread head to the thread tail