Measure a split cotter pin as shown the diameter x the length of the short leg from under the head.Cotter pins can be an essential component in a range of mechanisms and scenarios, from ensuring that nuts remain tightly secured in place on shafts to keeping ramps in the correct position and allowing for ease of use when access is required. Split pins are typically made of soft metal, making them easy to install and remove, but also making it inadvisable to use them to resist strong shear forces. When they are removed they are supposed to be discarded and replaced, because of fatigue from bending. Once inserted, the two ends of the pin are bent apart, locking it in place.
To avoid confusion, the term split cotter is sometimes used for a split pin.Ī new split pin has its flat inner surfaces touching for most of its length so that it appears to be a split cylinder. The British definition of a cotter pin is equivalent to the US term cotter. Typically made of thick wire with a half-circular cross-section. Nowadays some split cotter pins are measured only in millimetres.Ī split pin, also known in the United States as a cotter pin or cotter key is a metal fastener with two tines that are bent during installation. If when you enquire we can only offer a longer size, do not be put off as you can cut them down to suit.
A majority of our “OBSOLETE STOCK” is MILD STEEL, although we do have a small limited number in both BRASS and A2 STAINLESS STEEL.
We can offer a range of split cotter pins in many diameters, lengths and materials.
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