What does the term "thread pitch" refer to in a bolt?

The term "thread pitch" specifically refers to the distance between threads on a bolt, which can be measured in millimeters or threads per inch. It is a critical specification that defines how close the threads are to one another, impacting how well the bolt fits into a corresponding nut or a threaded hole. A finer pitch indicates that the threads are closer together, while a coarser pitch means the threads are spaced further apart. This measurement is essential for ensuring compatible threading between bolts and nuts, and it affects the strength and engagement of the fastener in applications.

Understanding thread pitch is crucial for selecting the correct fastener for a particular task, as using bolts with incorrect pitch can lead to many issues, such as stripping of threads or improper assembly.