Self-locking fasteners are imperial or metric

Now made in standard or metric sizes a self-locking fastener has a simple ring washer which also can be made to either a 6 or 12 point configuration.

The Phil-Lok self locking fastener is now available in standard or metric sizes! The ring washer (the top slightly oversized four-slot washer) is a simple design which also can be made to either a six or 12 point configuration.

The tab lock washer (the bottom two-tab washer) is designed to positively lock the nut to the bolt and to also create a spring fit between the ring washer and the tab lock washer thus ensuring a rattle free locking mechanism.

It can be made to standard or metric specifications.

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