Q. For British association thread the angle between the two flanks is __

A
55 degrees
B
47.5 degrees
C
29 degrees
D
45 degrees
Solution:
  • For Whitworth thread the angle between the two flanks is 55 degrees.
  • For British association thread the angle between the two flanks is 47.5 degrees.
  • The depth of thread is 0.6 times the pitch with rounded tops and bottoms.
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