Whitworth devised a standard for screw threads with a fixed thread angle of 55° and having a standard pitch for a given diameter
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Whitworth devised a standard for screw threads with a fixed thread angle of 55° and having a standard pitch for a given diameter
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.