The size of the screw determines the size of the head, and the matching principle is to choose the same shape as the head of the screw.
First, the basic concept of batch head and screws
Screws, which are commonly used fasteners in machinery and construction, are a universal fastening part. Batch head is a tool used in batches, through the corresponding batch head can easily remove and install screws.
Second, the relationship between screw length and diameter
First, we need to determine the length and diameter of the screw. Screw diameter refers to the diameter of the screw trunk, usually expressed in mm; Screw length refers to the length of the entire screw, also expressed in mm. When selecting the batching head, the size of the batching head needs to be selected according to the screw diameter and length.
Three, screw and batch head matching principle
1. The type of batch head is the same as the shape of the screw head
When selecting the head, the first thing to pay attention to is the shape of the screw head. The shape of the screw head is usually divided into cruciform, hexagonal, round and so on. There are many types of batch heads, mainly cross, hexagonal, flat head and so on. Therefore, when we select the batch head, we should choose the same shape as the screw head.
2. The size of the batch head matches the screw diameter
When selecting the batching head, the size of the batching head should be selected according to the screw diameter. Usually, the head specification is indicated by the screw diameter, such as M5 screws need M5 size of the head.
3. The length of the batch head matches the length of the screw
The length of the head should also match the length of the screw. If the head is too long, it will affect the tightening of the operation, if the head is too short, it may cause the screw to not be in place.
How to use the batchhead correctly
1. Avoid using worn batch heads
The head will be worn for a long time, which will cause the corresponding screws to loosen. Therefore, avoid using frayed batch heads.
2. Do not deflect the tip
When using the batch head, it must be noted that the batch head should be perpendicular to the axis of the screw, and do not tilt the batch head, otherwise it is easy to cause the batch head wear and screw damage.
3. Control torque
When using the batting head, be sure to control the torque, and do not use too much torque to drive the screw, because it is easy to cause the batting head to break or the screw to break directly.
Screws and batch heads are indispensable tools, and when using, we must pay attention to the matching principle and the correct use method to ensure the smooth progress of the work.
