Q. For a square thread the distance between the crest and root (d) is __ when pitch (p) is given.

A
a) d= 0.86 p
B
d= 0.5 p
C
d= 0.61 p
D
d= 0.64 p
Solution:

For a buttress thread the distance between the crest and root (d) is 0.75 times the pitch, for square thread ?d? is 0.5 times the pitch, for a Whitworth external thread ?d? is 0.64 times the pitch.

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