Class 8 nuts are comparable in strength to Class 8.8 bolts and are suitable for fastening most machinery and equipment.

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

These nuts are about 25% stronger than medium-strength steel nuts.

Closely spaced metric threads prevent these nuts from loosening due to vibration. About 25% stronger than medium-strength steel nuts, these nuts are comparable in strength to Class 10.9 bolts.

Tighten these nuts by turning them to the left; once fastened, they resist loosening from counterclockwise motion.

These nuts should be used for light duty fastening applications, such as securing access panels.

These nuts are comparable in strength to Grade 9 bolts.

Made from medium-strength steel with a nylon insert, these Class 8 metric locknuts are strong enough to use on most machinery and equipment that’s prone to vibration and temperature changes.

Comparable in strength to Grade 8 bolts, these locknuts are about 25% stronger than medium-strength steel locknuts.

These Grade 8 locknuts are about three times stronger than low-strength steel distorted-thread locknuts.

Strong enough for use in most machinery and equipment, these medium-strength metric nuts have serrations on the underside of the flange. The serrations prevent the nuts from loosening in applications with mild vibration.

These flange locknuts are comparable in strength to Grade 8 bolts.

Also known as collar nuts, these metric nuts have a flange that distributes pressure across the surface, so you don't need a washer. Made of high-strength Class 10 steel, they’re about 25% stronger than medium-strength steel flange nuts.

Once installed these rivet nuts have a large back flange that distributes the load across a broad area for a strong hold in plastic and composites.

Sloped sides make these nuts difficult to grasp with standard hand tools to reduce the risk of unwanted removal.