Why socket pan head screw need tolerance?

Many people know that there are no identical leaves in the world, and there are no identical snowflakes. Similarly, there is no identical socket pan head screw. They will always be a little different in the nuances.

Therefore, the socket pan head screw must be clearly marked when it is produced. If the tolerance of the screw is not specified, then the person responsible for the production does not know how to produce it. What should the size of the product not be used by the customer?

Because each customer has different tolerance requirements for the socket pan head screw. For example, the diameter of the head is 8mm, and some customers can allow tolerances of ±0.3, but some customers only allow tolerances to ±0.05mm and so on. Different tolerance requirements, the way of production is not the same, the price is also different.

Therefore, when the salesperson receives the customer’s order, he must ask the customer what the tolerance requirements are. No tolerance, no matter which screws manufacturer, can not be produced, it is impossible to make the size of the screw just 8mm. Therefore, tolerances are important for screws.

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