Hex jam nuts are a type of nut that is designed to be thinner than standard hex nuts. These nuts have a reduced height or thickness, making them suitable for applications where space is limited. The term “jam” in the name refers to the fact that these nuts are often used to lock or jam another nut in place.

Here are some key features and uses of hex jam nuts:

1. Reduced Height: Hex jam nuts are thinner compared to regular hex nuts. This design allows them to be used in tight spaces or situations where a standard nut might be too tall.
2. Locking Function: These nuts are commonly used as locknuts, where their thinner profile is advantageous. They are often tightened against another nut to prevent it from loosening due to vibrations or other external forces.
3. Materials: Hex jam nuts can be made from various materials, including steel, stainless steel, brass, or other metals, depending on the application requirements.
4. Threads: Like standard nuts, hex jam nuts have threaded inner surfaces, allowing them to be screwed onto bolts or threaded rods.
5. Applications: Hex jam nuts find applications in various industries, including automotive, machinery, and construction, where they are used in situations where space constraints or the need for a locking function is essential.

It’s important to note that when using hex jam nuts as locknuts, they are typically installed alongside a standard nut. The standard nut is tightened against the surface, and the hex jam nut is then tightened against the standard nut to create a locking effect.

When choosing hex jam nuts for a specific application, it’s essential to consider factors such as material compatibility, thread size, and the level of torque or load the nuts will need to withstand.