An external tooth lock washer provides more friction than an internal lock washer of the same size.

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Multiple Choice

An external tooth lock washer provides more friction than an internal lock washer of the same size.

External tooth lock washers provide more friction because their teeth extend outward and bite into the mating surface around the fastener, increasing the grip and resisting turning more effectively. Internal tooth washers have teeth that bite inward toward the hole, which tends to bite into the bolt or nut rather than the surrounding surface and offers less grip. So, for the same size, the external tooth version creates greater friction and helps prevent loosening more than the internal type.

External tooth lock washers provide more friction because their teeth extend outward and bite into the mating surface around the fastener, increasing the grip and resisting turning more effectively. Internal tooth washers have teeth that bite inward toward the hole, which tends to bite into the bolt or nut rather than the surrounding surface and offers less grip. So, for the same size, the external tooth version creates greater friction and helps prevent loosening more than the internal type.

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