Thread angle
The angle of light occurs in all threads and measures the angle of the thread flank to flank.
Functions
The size of the flank angle is decisive for the scope of the type of thread.
- Sawmilling and Lead have a small flank angle and covered by motion thread.
- V-thread with 60 ° and Whitworth thread with 55 ° have a greater edge angle and covered by mounting threads.
There are also differences between the same thread forms. The ACME thread (USA) is specified with a flank angle of 29 °, the common in Europe trapezoidal thread has a flank angle of 30 °.
Overview of the types of threads
Standardised thread
(Extract of DIN 202)