A pack of one hundred internal lock washers plated with zinc that come with a bolt size of 5/32" and an outer diameter of 5/16". They are used to prevent nuts and bolts from loosening due to vibrations, working by gripping onto the surface with their teeth-like edges.
| Bolt Size | #8 (5/32") |
| Outer Diameter | 5/16 in. |
| Plating | Zinc |
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