cotter pin

(redirected from cotter key)
Also found in: Thesaurus, Encyclopedia.
Related to cotter key: cotter pin
click for a larger image
cotter pin

cotter pin

n.
A split cotter inserted through a hole or holes and bent at the ends to fasten two or more parts together.

cotter pin

n
1. (Mechanical Engineering) a split pin secured, after passing through holes in the parts to be attached, by spreading the ends
2. (Mechanical Engineering) a tapered pin threaded at the smaller end and secured by a nut after insertion

cot′ter pin`


n.
a cotter having a split end that is spread after being pushed through a hole to prevent it from working loose.
[1890–95]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cotter pin - a cotter consisting of a split pin that is secured (after passing through a hole) by splitting the ends apartcotter pin - a cotter consisting of a split pin that is secured (after passing through a hole) by splitting the ends apart
cottar, cotter - fastener consisting of a wedge or pin inserted through a slot to hold two other pieces together
References in periodicals archive ?
He got out a quarter-inch drill and we drilled a hole through there and took a wire and put a loop on the end of it and put a cotter key on the back and pulled it tight to the lattice and wired it.
Discovered right aileron cable-to-bell-crank attach bolt nut missing its cotter key (p/n MS24665).
After doing so, the striker bolt was reinstalled, but the corresponding washer, bolt, and cotter key (highlighted in the photos above), which secure the cam assembly to the timer check-valve, were left off in order to reduce the amount of time it would take to remove the striker bolt again if more adjustments were required.