ThePipingMart Blog Fasteners 5 Types of Long Nuts and Their Uses

5 Types of Long Nuts and Their Uses

Long Nuts

In the world of construction and manufacturing, nuts have an essential role. They are small but vital components that ensure bolts, screws, and other fasteners stay firmly in place. However, more than simply knowing about nuts is required. It is equally important to be aware of the different types of nuts, and in this blog, we will focus on long nuts specifically. Long nuts are used extensively in various applications, and their elongated shape offers many advantages. So, let’s dive in and learn more about the different types of long nuts available!

Types of Long Nuts

Hex Long Nuts

Hex-long nuts are the most commonly used type of long nut. As the name suggests, they are hexagonal and are designed to fasten bolts and screws tight. One of the most significant advantages of long hex nuts is their ability to reduce the likelihood of loosening and falling out over time. This is due to their thread design requiring a specific torque level for optimal results.

Slotted Long Nuts

Slotted long nuts are another type of long nut with a unique design. Unlike long hex nuts, they have a slot running along their length that allows them to be adjusted to fit different sizes of bolts and screws. This feature makes them particularly useful when changing the tension between objects, such as machinery. Slotted long nuts are also commonly used in electrical applications.

Castle Long Nuts

Castle long nuts are similar to long-slotted nuts but offer additional benefits—their unique shape features tapered ends that resemble castle turrets, hence their name. The slotted end of the nut is wider than the bolt, allowing a cotter pin to be inserted into the hole on the bolt and nut. This eliminates the risk of the nut loosening and coming off, making Castle long nuts ideal for applications where vibrations or movement are frequent.

Wing Long Nuts

Wing-long nuts are easy to identify because of their wing-like handles. These handles make them easy to install and remove without needing tools like pliers or wrenches. As such, wing long nuts are highly utilized in situations requiring frequent disassemblies, such as air conditioners, appliances, and machinery.

Coupling Long Nuts

Coupling long nuts are used to join two threaded rods or bolts together. They have an inner diameter that is precisely designed to fit the outer diameter of the threaded rod, providing a secure and robust hold. Coupling long nuts can connect several nuts on the same threaded rod, which is useful when creating a more extended threaded section.


Long nuts come in various shapes and sizes, but the ones discussed above are the most commonly used. Knowing the different types of long nuts available can help you make better-informed decisions when choosing the proper nut for your application. Whether you need to reduce the risk of loosening, adjust the tension between two objects, or frequently remove the nut, a long nut is available to fit your needs!

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