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The British definition of "cotter pin" may include the equivalent to US term "cotter". To avoid confusion, the term split cotter is sometimes used for a split pin. A further use of the term "cotter pin" is the "crank cotter pin" used to lock bicycle pedal cranks to the bottom bracket axle. These are not "split" at all and are wedge shaped.
Cross-section of a connecting rod, showing strap (S), gib (G), and cotter pin (C) Another view, with scale, of bicycle crank cotter. A cotter is a pin or wedge with a flat bearing surface passing through a hole to fix parts tightly together. In British usage cotter pin has the same meaning, [1] but in the U.S. it means a split pin.
The pin itself may be as simple as a metal rod inserted into a channel drilled through two moving parts, locking them in place as long as the pin is intact. It may also be a plain metal rod inserted through a hub and axle; the diameter of the rod, alloy and tempering of the metal, are all carefully chosen to allow the pin to shear only when the ...
D: Cross-section of a new split pin An R-clip , also known as an R-pin , R-key , hairpin cotter pin , [ 1 ] hairpin cotter , [ 2 ] bridge pin , [ 2 ] hitch pin clip [ 3 ] [ 4 ] or spring cotter pin , [ 5 ] is a fastener made of a durable but flexible material, commonly hardened metal wire, resembling the shape of the letter "R".
Cotter pin may refer to: In U.S. usage: Split pin, a metal fastener with two tines that are bent during installation used to fasten metal together, like with a staple or rivet; Hairpin cotter pin, more commonly known as an "R-clip" Circle cotter, a ring-shaped cotter pin; In British usage:
It's standard usage in the US to call the split pin that used to hold a cotter or other pins (like a clevis pin) in place a "cotter pin" or a "cottor key". (I rather expect that which is used is a regional thing.) —Preceding unsigned comment added by 66.227.18.86 ( talk ) 02:01, 14 September 2008 (UTC) [ reply ]
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