![]() ![]() Typically made of thick wire with a half-circular cross section, split pins come in multiple sizes and types. A split pin (UK usage) / cotter pin (USA usage) holding a rod in place with a washerĪ split pin, also known in the US as a cotter pin or cotter key, is a metal fastener with two tines that are bent during installation, similar to a staple or rivet. The final step is to bend the ends of the cotter pin to secure it in place.For a split pin used in stationery, see Brass fastener. Once you have the correct size cotter pin, the next step is to insert the cotter pin into the hole.Ĥ. The first step is to determine the size of cotter pin that you need.ģ. Installing a cotter pin is a simple process that can be accomplished with just a few tools.Ģ. Next, use a pair of wire cutters to snip the pin in half, then pull the halves of the pin out of the holes.ġ. To remove a cotter pin, first use a pair of pliers to bend the ends of the pin away from the surface of the metal. Finally, use a hammer to tap the ends of the pin until they are firmly seated in the holes. Next, insert the pin through the holes and bend the ends of the pin so that they are flush with the surface of the metal. If the pin is too long, trim it to size with a pair of wire cutters. To install a cotter pin, first align the pin with the holes in the two pieces of metal to be joined. Other types of cotter pins include the T-shaped pin, which is used to secure a pulley or other rotating component, and the I-shaped pin, which is used to secure a shaft or other cylindrical component. The most common type of cotter pin is the U-shaped pin, which is used to secure two pieces of metal together. See also Blend Door Actuator Symptoms: How to Test and Replace ? For Cotter pin typesĬotter pins come in a variety of shapes and sizes, each designed for a specific purpose. Cotter pins are also available in metric sizes. There are various sizes of cotter pins, which are determined by the diameter of the shaft they are used on. If the cotter pin is bent or otherwise damaged, it will need to be replaced before it can be used again. Once the cotter pin is out, inspect it for damage. If the cotter pin is still being stubborn, you can try using a small flathead screwdriver to pry it out. Once the cotter pin starts to loosen, you can pull it out the rest of the way by hand. You may need to apply some pressure to the pliers to get the cotter pin to budge. Once you have a good grip on the end of the cotter pin, start to twist it back and forth until it starts to loosen. If the cotter pin is particularly stuck or corroded, you may need to use a wire brush to clean off the end before you can grab it with the pliers. ![]() Start by using a pair of needle-nose pliers to grab onto the end of the cotter pin. Here are a few tips on how to remove a cotter pin: While they are very simple to install, removing them can be a bit more challenging, especially if they are corroded or stuck in place. See also How Often Should A Sump Pump Run? How To Remove A Cotter PinĬotter pins are one of the most common types of fasteners used in a wide variety of applications. When used in conjunction with a cotter key, cotter pins can be used to secure a wide variety of parts and components. They are also used to secure castle nuts on aircraft control surfaces. The most common type is the hairpin cotter, which is used to secure a clevis pin or clevis rod end.Ĭotter pins are used in a wide variety of applications, such as fastening cottered cranks on bicycles and lawnmowers, attaching links in chainmail armor, and as R-clip retainers for shafts and axles. Typically made of steel or zinc-plated steel, cotter pins come in different sizes and types. What Is A Cotter Pin Used For?Ī cotter pin, also known as a split pin, is a fastener consisting of a metal pin with two opposed tines that are bent during installation, similar to a staple. If the cotter pin is too large, you may need to use a pair of pliers to bend it over. ![]() If the cotter pin is too small, you may need to use a punch to get it started.Ĥ) Once the cotter pin is in place, bend the end over to secure it. If you’re not sure, err on the side of a slightly larger cotter pin, as it will be easier to install than a smaller one.Ģ) Insert the cotter pin into the hole, with the bent end pointing away from the direction that the load will be applied.ģ) Use a hammer to gently tap the cotter pin into place. How To Install Cotter Pin: A Step-By-Step GuideĪssuming you are installing a new cotter pin:ġ) Start by finding the right size cotter pin for the job. Do you know how to install and remove a cotter pin? This guide will teach you everything you need to know about this essential piece of hardware, including the different types of cotter pins and how to install and remove them.
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