Once the hole has been drilled, you’ll want to remove any debris or metal shavings and thread the cotter pin through the hole.If you used a regular bolt, you can either drill the hole with the nut in place or mark it with a sharpie and remove the nut while you drill. If you used a bolt with a predrilled hole, make sure that you line it up with the opening in the slats of the castle nut.Put the castle nut onto the bolt and screw it into place.Once you have all the pieces ready, you can begin installing the cotter pin on the castle nut here are the basic steps. Installing a cotter pin on a castle nut is a reasonably simple task, but you should follow the proper safety procedures to avoid injury. So, you can either drill it yourself or purchase a nut with a predrilled hole. The cotter pin needs a space to be threaded through to fit in place. To install a cotter pin on a castle nut, you will need one additional piece of hardware – a bolt with a hole in it. But they can also be removed if you want to unscrew the nut later on. How to Install a Cotter Pin on a Castle NutĬotter pins can be used in conjunction with castle nuts to secure the nut in place and ensure it doesn’t dislodge during movement. This allows it to be used in specific scenarios where a sharp edge is not ideal. Split RingĪlso known as a circle cotter, is a cotter pin shaped like a circle with an open end in the middle. This allows the straight prong to be inserted into the hole while the curved prong remains outside to hold the piece in place. R-pinsĪlso known as hairpin cotters, has a similar shape to a standard split pin but feature one prong that is bent in several places, resembling the letter R. They also feature a circular U-shaped top, which can be bent to prevent any movement. There are multiple varieties of cotter pins that work well in differing scenarios, including: Split pinsĪ split spin – often used interchangeably with cotter pins – features two prongs side by side that can be inserted into the same hole. They are shaped as a pin or wedge and placed in a hole to cause enough friction to prevent loosening or unwanted movement. What is a Cotter Pin?Ī cotter pin – also known as a split pin – is a metal locking mechanism used to prevent movement along an axle or shaft. ![]() But to work properly, they must be fastened with another piece of hardware, such as a cotter pin or a safety wire. ![]() They are typically made from steel or stainless steel and come in various sizes.Ĭastle nuts can be locked into place to keep them from jogging loose due to outside pressure or vibrations. Why Would Someone Install a Cotter Pin on a Castle Nut?Ī castellated nut – also known as a castle nut – is a nut that resembles the parapet of a castle, with multiple short prongs arranged circularly, similar to a crown.How to Remove a Cotter Pin from a Castle Nut.How to Install a Cotter Pin on a Castle Nut.
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