Design of Machine Elements

Q.  The designation M 33 x 2 of a bolt means___________________?

a. metric threads of 33 nos in 2 cm.
b. metric threads with cross-section of 33 mm
c. metric threads of 33 mm outside diameter and 2 mm pitch
d. bolt of 33 mm nominal diameter having 2 threads per cm
e. none of the above


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