![]() Similar to the installation process, the removal process for a cotter pin is simple. Unbending and re-bending the prongs for use in another application makes them brittle and increases the risk of failure.įor the best results, if you need to replace or remove a cotter pin, discard the old pin and use a new one in its place. However, cotter pins are generally single-use only. Though the materials are soft enough to bend with a pair of pliers, these pins provide a strong, reliable locking mechanism once the prongs are bent into their secured shape. Whether made from stainless or zinc-plated steel, cotter pins are made to last once installed. Clip any excess length from the end of the pin to prevent snags or jams, but leave enough to prevent slipping through the bolt while machinery is in use. ![]() Then, using pliers, secure the cotter pin by spreading the prongs in opposing directions. To properly install a cotter pin, insert the pin into the hole of the bolt until the pin’s head is flush against the bolt. You must install cotter pins correctly, especially when used around heavy-duty machinery or in hazardous environments, to prevent operational issues or potential health risks. If you're unsure which type of cotter pin is right for your needs, FMW Fasteners can help you compare the benefits and applications of each material. Stainless steel is often more durable and corrosion-resistant than zinc, but zinc is typically the more cost-effective option. Whether you need zinc-plated or stainless steel pins depends on your project needs and budget. If you can’t find a cotter pin that fits the exact length requirements of your item, choose a larger-sized cotter pin and cut the materials down to the ideal size. Length: Look at the length of the holes you need to secure and compare this number to the shortest leg of the cotter pin - the length of the hole should be shorter than both cotter pin prongs to ensure the cotter pin performs effectively and dependably.Head size: Find a cotter pin head size that is large enough to prevent the pin from moving over time with constant vibrations but no so large that it could prevent movement of other pieces or that it could become jammed. ![]()
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