Jam Nut vs. Hex Nut: 3 Differences Explained


During your everyday life, or while at work or out with friends, you use nuts all the time. No, not the kind you eat, but nuts that hold things together. Nuts help attach one piece of equipment to another or provide extra protection to help keep them secure.

Two of the most common nuts are the jam nut and the hex nut. Both offer benefits and disadvantages, but which should you use?

Read on to learn the difference between the jam nut vs hex nut to see which one is better for your application.


Hex nuts and jam nuts are two of the most popular types of nuts used when bolts need to be tightened. Hex nuts are designed with either six or eight sides and are used for general purposes, while jam nuts are thinner and add extra leverage when bolts need to be tightened.

Hex nuts are typically thicker than jam nuts which gives them a better grip on the bolt. Jam nuts, on the other hand, are thinner and help to reduce the possibility of over-tightening the bolt. They also feature a looser grip than hex nuts, meaning they are easier to control and they require less force.

Understanding the differences between Jam Nut and Hex Nut is important for finding the best product for the job. A shop for cap nuts is an essential source of components and components needed in various industries.

Purpose And Usage 

A jam nut vs hex nut is used in many applications. A jam is a lock nut and is used for locking applications. This means two nuts tightened together will help to prevent the loosening of a bolt when sideways force is applied.

A hex nut is a regular six-sided nut that is used in a variety of applications, mainly for tightening and fastening components. When a hex nut is used, a thread locker product is usually used to keep the nut tight and secure. It is important to use the correct type of nut and thread locker combination based on the purpose and usage of the application.


Jam nuts are flat, internally-threaded fasteners that feature two opposing threads. The main applications for jam nut vs hex nut are found in heavy-duty construction, automotive repair, and engineering. Jam nuts are commonly used in hydraulic fittings, lock washers, and threaded rods, while hex nuts are often used for conventional bolts.

Depending on the application, the strength of both jam nuts and hex nuts will vary, though jam nuts tend to be able to resist more stress than hex nuts due to the added friction from the jamming force. Additionally, jam nuts are easier to remove than hex nuts due to how they are designed.

Clarify How Jam Nut vs Hex Nut Can Best Serve Your Needs

Jam nut vs hex nuts are both common nut types but they have different purposes. Jam Nuts are thinner and used to lock nuts against each other, while Hex Nuts are thicker and used to secure parts.

Hex nuts are also easier to find in various sizes and shapes than Jam Nuts. For your next project, remember to think about which nut type is best suited for the job!

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