Lock, also known as bite. The specific performance is that the screw and the nut adhere in the tightening process, can not screw in or out, and lead to a series of serious consequences, which is a problem that has plagued the stainless steel fastener industry for a long time.

How to prevent lock-up?

First, prevention first

When selling, understand the customer's use occasions in advance, and communicate with customers about the use of "anti-lock nuts" for the following locking high-risk industries and occasions.

2. Follow the correct use method

1. The length of the bolt should be selected appropriately, with 1-2 teeth spacing of the nut exposed after tightening.

2. The tensile strength of the bolt and the safety load of the nut meet the design requirements.

3. Keep the product thread clean before use. If the thread is damaged, at least the nut can pass smoothly.

4. When tightening the nut, the direction of wrench application must be vertical to the axis of the bolt, do not tilt.

5. Use a torque wrench, the torque value is within the safe torque range, and the force is applied evenly during rotation.