Multiple choice

The thread angle of Whitworth thread from is

  1. 550

  2. 600

  3. 900

  4. None of these

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Whitworth thread form, developed by Joseph Whitworth, uses a 55° thread angle with rounded crests and roots, differing from the more common 60° metric thread. This British standard thread was widely used in historical engineering applications.