Question:-
Consider the case of square threaded screw loaded by a nut as shown in the given figure. The value of the average shearing stress of the screw is given by (symbols have the usual meaning)

Option (A)
2F/pdrh
Option (B)
F/pdrh
Option(C)
2F/pdh
Option(D)
F/pdh
Correct Option:
(B)
Question Solution:
The average thread shearing stress for nut tn = (P/p.d.b. x n) or (F/ pdr.h)
h = (b x n)
dr = Major diameter
question-answer-faq-5137