Machine Design
In cylindrical cams, the follower moves

In any direction irrespective of cam axis
Along the cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis

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Machine Design
A stud

Has both the ends threaded
Has pointed threads
Has head at one end and other end fits into a tapped hole in the other part to be joined
Has a head on one end and a nut fitted to the other

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