slotted nut

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Several types of nuts

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slotted nut

tool

Also known as: castellated nut

Learn about this topic in these articles:

varieties of nuts and bolts

In nut
…Figure, including the slotted or castellated nut; when this nut is tightened on the bolt, the slots are aligned with a hole in the bolt and locked in place by a cotter pin or wire lacing to prevent loosening or unscrewing. Locking can also be accomplished by tightening a thin…
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