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For British association thread, the angle between the two flanks is ____

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+1 vote
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in Engineering Drawing by (687k points)
For British association thread, the angle between the two flanks is ____

(a) 55 degrees

(b) 47.5 degrees

(c) 29 degrees

(d) 45 degrees

The question was posed to me during an interview for a job.

I need to ask this question from Screw Threads topic in chapter Screw Threads & Screwed Fastening of Engineering Drawing

1 Answer

+1 vote
by (1.4m points)
Right option is (b) 47.5 degrees

The best explanation: 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, for acme thread the angle between the two flanks is 29 degrees.

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