Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.

These nuts have a locking feature to resist loosening.

The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer.

Cover and protect threads while providing a finished appearance.

With a slim, round profile and a slotted drive, these metric nuts work in tight spots where there's no room for a wrench to turn. Instead, tighten them from the center of the nut with a slotted screwdriver.