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A cotter is a pin or wedge passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning,[1] but in U.S. it refers to different fasteners.

Typical applications are in fixing a crank to its crankshaft, as in a bicycle, or a piston rod to a crosshead, as in a steam engine.

Popular usageEdit

Formerly, it was common to mount bicycle crank arms using a cotter, though now usually a more easily maintained arrangement is used such as a square tapered or splined interface. These cotters have a short threaded section at the narrower end of the taper, which is used to hold the cotter in place with a washer and nut.

Because bicycle cotters were normally retained by a nut and washer, the distinction was unimportant in this context.

See alsoEdit

ReferencedEdit

External links Edit

sv:Sprint (teknik)

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