Square combination locks are commonly used for various purposes, providing a convenient way to secure belongings or control access to certain areas. However, like any other manufactured product, square combination locks are not immune to defects that can arise during the production process. These defects can impact the lock's functionality, security, and overall performance.

One of the most crucial aspects of a square combination lock is the accuracy of its combination code. Inaccurate codes can render the lock useless and compromise its security features.

Causes:

Human Error: Mistakes made during the programming process can lead to inaccurate or faulty combination codes. This can involve errors in recording the code, inputting the code into the lock's memory, or setting the components responsible for code recognition.

Mechanical Malfunctions: Defective or worn-out mechanical components within the lock, such as springs, gears, or lever mechanisms, can improperly encode or decode the combination, resulting in inaccuracies.