The screw pitch and lead are key concepts in threaded mechanisms, such as screws and lead screws. Here’s a quick explanation of both:
1. Screw Pitch
- Definition: The distance between adjacent threads, measured parallel to the screw’s axis.
- Example: If the distance between two consecutive threads is 1 mm, the pitch is 1 mm.
2. Screw Lead
- Definition: The distance the nut (or corresponding part) travels along the screw’s axis in one complete rotation.
- For single-start screws, lead = pitch.
- For multi-start screws, lead = pitch × number of starts.
Reference: https://en.m.wikipedia.org/wiki/File:Lead_and_pitch_in_screws.png