lock washer

American  

noun

1. a washer placed under a nut on a bolt or screw, so made as to prevent the nut from shaking loose.

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Example Sentences

My bill for the four bolts, the toggle nuts, four fender washers and four lock washers was just under $10.

From Seattle Times

If not, disassemble the joint and add washers — plus a lock washer between the nut and its washer.

From Washington Post

On every bolt use a castellated nut and a cotter pin, or an ordinary nut and a lock washer, so the bolt will not work loose.

From Project Gutenberg

The cell connectors rest on the tops of the lock washers and keep them in place.

From Project Gutenberg

He saw that all locks on the turnbuckles were fastened, and that the locks had lock washers beneath them.

From Project Gutenberg