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What are the types of commonly used small screws?

Tid: 2022-08-09 Hits: 1

What are the types of commonly used small screws?

There are many kinds and specifications of screws, which can be subdivided into thousands of kinds.

We often encounter the following problems in the daily sales of screws:

Unable to accurately express the type of screw to be purchased, it is easy to confuse the screw head type, resulting in the failure to use after purchase and affecting the production progress, such as FAPA head type confusion.

When measuring the screw size, the measuring point is different from the conventional measuring method, resulting in the wrong selection of screw specification. For example, the measurement method of round head screws is completely different.

We have listed some commonly used screw types for your reference when selecting screws.


Measurement method of flat head and countersunk head tapping screws: screw diameter * total length (including head)

flat head tapping screw

Measurement method of round head self tapping screw: screw diameter * screw length (excluding head)

pan head tapping screw

Round head flat tail self tapping screw measurement method: screw diameter * screw length (excluding head)

pan hoved skrue

Measurement method of flat head and countersunk head flat tail self tapping screws: screw diameter * total length (including head) measurement method of round head flat tail self tapping screws: screw diameter * screw length (excluding head)

pan hoved skrue


Measuring method of round head self tapping screw with dielectric: screw diameter * screw length (excluding head)

truss head screw

Measurement method of flat head countersunk machine wire: screw diameter * total length (including head)

flad skrue

Measuring method of round head machine wire: screw diameter * screw length (excluding head)

pan hoved skrue

Measuring method of large flat head machine wire: screw diameter * screw length (excluding head)

truss head screw


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