A jam nut is a low profile type of nut, typically half as tall as a standard nut. It is commonly used as a type of locknut, where it is "jammed" up against a standard nut to lock the two in place. It is also used in situations where a standard nut would not fit.

Choose from our selection of jam nuts, including medium-strength steel thin hex nuts, high-strength steel thin hex nuts, and more. Same and Next Day Delivery.

Oct 23, 2017 · Jam nuts are nuts that are about half of the size of a regular nut. In practice, these nuts are both screwed onto the bolt and then they are tightened against each other. There are a couple of different reasons you might want to use jam nuts.

May 2, 2022 · Jam nuts are short, threaded nuts. Most of them are hexagonal — just like other nuts. The difference, of course, lies in their height. Jam nuts are about half as tall as ordinary nuts. With their shorter height, they essentially work like locknuts. They are known as “jam nuts” because they are designed to jam against another nut.

Mar 10, 2025 · What is a Jam Nut? A jam nut, also known as a thin nut, is a type of fastener that is about half the height of a standard finish nut. While the circumference and thread sizes are the same as a standard nut, its reduced height makes it suitable for applications where space is …

Hex jam nuts are thinner than a standard hex nut but have the same dimension across the flats and corners. Hex jam nuts have two common applications. A jam nut can be threaded onto a bolt and run tight against the standard nut which will lock the …

Get free shipping on qualified Jam Nuts products or Buy Online Pick Up in Store today in the Hardware Department.

Jam Nuts are heavy profile hexagon head bolts with full or partial thread configurations. Boltport is a manufacturer of Jam Nuts in metric and imperial sizes with coarse, fine, extra fine, and custom threads to various dimensional standards and material specifications.

Apr 2, 2023 · Locknuts offer superior anti-vibration protection, while jam nuts provide extra protection for nuts already in place against accidental loosening over time. They are knowing …

Mar 29, 2022 · A jam nut is a secondary, low profile nut that is threaded onto a bolt and tightened against a primary nut in order to lock them both into place using tension against the bolt thread.