40. A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
Lead=L=n p
Figure 8-1
Terminology of
screw threads.
Sharp Vee Threads
shown for clarity;
the crests and roots
are actually
flattened or
rounded during the
forming operation
43. Power screw thread forms. [Note: All threads shown are external (i.e., on the screw, not
on the nut); dm is the mean diameter of the thread contact and is approximately equal to
(d + dr)/2.]
A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR