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Positive locking device

Positive locking device
cotter pin]] to prevent it from unscrewing

A positive locking device is a device used in conjunction with a fastener in order to positively lock the fastener. This means that the fastener cannot work loose from vibrations. The following is a list of positive locking devices:

  • A split beam nut
  • A castellated nut and a split pin
  • A hex nut or cap screw and a tab washer
  • A hex nut or cap screw and a lock plate
  • Safety wiring with various types of fasteners

7-122. GENERAL. The word safetying is a term universally used in the aircraft industry. Briefly, safetying is defined as: "Securing by various means any [[Nut (hardware)

nut]], [[Bolt (fastener)

File:Nut lock plate.svg|A locking plate File:Nut tab washer.svg|A tab washer

References

  • {{cite book |chapter-url=http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgAdvisoryCircular.nsf/list/AC%2043.13-1B/$FILE/Chapter%2007.pdf |access-date=2012-12-11

References

  1. Timings, Roger Leslie. (2005). "Newnes Mechanical Engineer's Pocket Book". Newnes.
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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