What is the term for the distance between the crest of one thread and the crest of the next?

The term for the distance between the crest of one thread and the crest of the next is known as pitch. This measurement is crucial in various applications involving threaded materials, as it defines how tightly or loosely threads engage with one another. When referring to screws or bolts, for instance, the pitch influences how the fastener will fit and function within a threaded hole. A finer pitch indicates that the threads are closer together, which can provide a greater degree of adjustment or tension, while a larger pitch offers quicker assembly or disassembly.

Understanding pitch is key for tasks such as selecting the appropriate fasteners for a specific job, ensuring compatibility, and achieving desired mechanical properties. The other terms do not refer to the distance between thread crests: depth typically involves how deep something is, diameter refers to the width of a circular object, and spacing generally pertains to the distance between two objects, which can relate to overall layout rather than the specific measurement of a thread.