When should the nut lock shown in the illustration, be replaced with standard lock washers or other similar devices used in the industry? See illustration GS-0156.

Question

Accepted Answer

Replacement with another nut locking device is unnecessary.

Answer

Flat locks are no longer used in the marine industry and should be replaced during the next maintenance procedure.

Answer

When torque values of 25 foot pounds or greater are being used, replacement with spring washers is mandatory.

Answer

Bellevue washers are the ideal substitute for these locking devices provided a thread locking adhesive is used.

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