The document discusses various aspects of thread profiles and fasteners, particularly focusing on screw threads. It outlines different thread forms, including square, acme, and their dimensions and characteristics. Additionally, the document references specific figures and pages for further details on the topic.

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32. A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR

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38. Threaded Fastners
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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

41. A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
Thread profiles.
a) Square (b) ACME; (c) UN, ISO
(c)

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(a) Single (STANDARD)-, (b) double-, and (c) triple threaded
screws.
Text Reference: Figure 15.2, page 667

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

44. A.N.KHUDAIWALA (L.M.E) G.P.PORBANDAR
Figure 15.5 Details of ACME thread profile. (All
dimensions are in inches.)
Text Reference: Figure 15.5, page 670

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