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SAE ARP688

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SAE ARP688 Revision B, April 1, 2018 Reusable Lock for Spanner Nuts
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Description / Abstract: This aerospace recommended practice is applicable to the design of a reusable locking device for cylindrical nuts which are generally tightened with a spanner wrench. Nuts of this type are commonly used to pre-load, and/or position, anti-friction bearings.

Purpose:

To provide basic information relating to the design of a reusable lock for spanner and similar cylindrical nuts.