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Locknuts with modified threads enable simplified tightening of mating screws
- November 14, 2017
- Product Release
- Assembly and Joining
New PEM® S-RT™ self-clinching, free-running locknuts from PennEngineering® feature a modified thread angle, enabling simplified tightening of mating screws and vibration-resistant locking performance in thin metal assemblies.
The modified thread formation allows mating screws to spin freely during the attachment process until clamp load is induced during the screw-tightening process. The applied clamp load then engages the locknut’s vibration-resistant locking feature, which locks the screw in place. Joint clamp load remains consistent, even after many on/off cycles.
The self-clinching locknuts install into aluminum or steel sheets as thin as 0.030 in. and become permanent parts of an assembly. After locknut installation using a PEMSERTER® or other standard press, the back side of the host metal sheet for screw insertion will be flush or subflush, and the assembly side will be flush or subflush for sheet-to-sheet attachment applications.
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The Fabricator is North America's leading magazine for the metal forming and fabricating industry. The magazine delivers the news, technical articles, and case histories that enable fabricators to do their jobs more efficiently. The Fabricator has served the industry since 1970.
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