Counter-Threaded Spring-Actuated Lock-Fasteners

[+] Author and Article Information
D. P. Hess

Dept. of Mechanical Engineering, University of South Florida, Tampa, FL 33620

J. Mech. Des 124(3), 582-585 (Aug 06, 2002) (4 pages) doi:10.1115/1.1485742 History: Received March 01, 2001; Online August 06, 2002
Copyright © 2002 by ASME
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Hess, D. P., 1998, “Vibration and Shock–Induced Loosening,” Chapter 40, Handbook of Bolts and Bolted Joints, Marcel Dekker Inc., New York, pp. 757–824.
White, G., 1996, Private Communication, Disc-Lock International, Culver City, California.
Hosko, M. J., 1996, Private Communication, Nord-Lock, Lake Michigan Wire Technologies Inc., Muskegon, Michigan.
Terry, S. L., 1999, “Maximizing and Preserving Bolt Tension in Threaded Fasteners,” Proceedings of the Second International Conference on Nonlinear Problems in Aviation and Aerospace, Daytona Beach, Florida, pp. 731–744.
Orthwein, W. C., 1990, Machine Component Design, West Publishing Company, New York.
Junker,  G. H., 1969, “New Criteria for Self-Loosening of Fasteners under Vibration,” SAE Trans., 78, pp. 314–335.


Grahic Jump Location
Cross-section of an assembly with lock-nut
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Free body diagrams of lock-nut components
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Cross-section of an assembly with lock-screw
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Vibration test results for standard bolt and nut
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Test results for standard bolt with new lock-nut design




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