Article
Article
Screw threads
Article By:
Luzadder, Warren J. Department of Engineering Graphics, Purdue University, West Lafayette, Indiana.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.608600
Continuous helical ribs on a cylindrical shank. Screw threads are used principally for fastening, adjusting, and transmitting power. To perform these specific functions, various thread forms have been developed. A thread on the outside of a cylinder or cone is an external (male) thread; a thread on the inside of a member is an internal (female) thread (Fig. 1). See also: Screw
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