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What are castle nuts

Views:1     Author:Site Editor     Publish Time: 2018-05-05      Origin:Site

What are castle nuts

Castle nuts are just one type of hardware commonly used in mechanics. Also known as castellated nuts, a castle nut is characterized by the notches present on one end, which resemble the serrated tops of castle parapets. The accompanying bolt has typically one to two holes, which allows the nut to lock securely in place.

 castle nut03

What are castle nuts used for

Castle nuts are known as positive locking devices. These devices require the use of a fastener, which ensures that the nut remains affixed despite any vibrations that may occur. This hardware is commonly used for automotive purposes, such as holding wheel bearings in place.

 

Before installing castle nuts, you can find bolts that come with pre-drilled holes for castle nuts, but you must know the length of the bolt you will need. If you do not have a bolt with a pre-drilled hole, you may drill your own; we can talk about that in another post. In this post, we will drill out own hole to show you how to make one yourself for better sizing.

First step:

Now that you are ready to begin, slide the bolt through the installation material and screw the castle nut onto the other side. You can use a sharpie or pencil to mark the area where you need the hole to be (inside the peaks of the nut). Then remove the nut and bolt and place the bolt into a vice.

Second step:

Screw the nut back onto the bolt and align it with the mark you drew earlier. This will serve as the drilling point. Use a punch to create an indent into the bolt so your drill bit has a starting point. Make sure you drill perpendicular to the hole so that it comes out in between the peaks on the other side as well.

Third step:

After you have drilled your hole, remove from the vice and place back into your installation material. For the purpose of this blog, we have left ours in the vice as we did not have an installation material readily available. Once it is back in the material place your cotter pin through the hole. Take a pair of pliers and bend the cotter pin out away from the center on each side. This will create a locking effect and the pin will not be able to fall out.


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