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

Choose these nuts for their adherence to strict military standards for material and construction.

These metric 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.

Choose these nuts for their adherence to strict military standards for material and construction.

About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications.

About half the strength of medium-strength steel nuts, these metric nuts are for light duty fastening applications.

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

These metric nuts are about 20% stronger than high strength steel nuts and are often used in heavy machinery.

These nuts have good chemical resistance and may be mildly magnetic. Metric 18-8 stainless steel is also known as A2 stainless steel.

Choose these nuts for their adherence to strict military standards for material and construction.

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

These nuts have excellent chemical resistance and can be used in saltwater environments.

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

Hardened for added strength, these nuts are more corrosion resistant to chemicals and salt water than 18-8 stainless steel nuts.

These nuts resist sticking during installation and are comparable in strength to Grade 5 steel.

Commonly used to fasten structural parts and pumps, these nuts are comparable in strength to Grade 8 steel.

These metric nuts resist oil, grease, and solvents (except mineral acids).

Fiberglass nuts are stronger than nylon 6/6 nuts. They resist acids, solvents, salt water, and oil.

Polycarbonate nuts stand up to oil, grease, and detergents.

Glass-filled nylon nuts are stronger than nylon 6/6 nuts. They resist oil, grease, and solvents (except mineral acids).

For use in wet environments, acetal nuts resist alcohol, gasoline, and solvents.

These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

These brass nuts resist rusting from water and have closely spaced threads to prevent loosening from vibration.

One-third the weight of steel, these metric aluminum nuts are corrosion resistant in wet environments and nonmagnetic.

These metric nuts are resistant to salt water, electrically conductive, and nonmagnetic.

These metric nuts have a high strength-to-weight ratio and resist acids and salt water.

More corrosion resistant than 400 nickel nuts, these nuts are often used in marine environments and chemical-processing plants.

Comparable in strength to Class 12.9 bolts.

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

These Class 10 nuts are about 25% stronger than medium-strength steel extra-wide hex nuts.

More corrosion resistant than 18-8 stainless steel nuts, these nuts can be used in saltwater environments.

Bronze nuts are stronger and more resistant to salt water than brass nuts.

More corrosion resistant than 18-8 stainless steel nuts, these nuts have excellent resistance to chemicals and salt water.

Half as thick as regular hex nuts, these nuts fit into spaces with low height clearances. They are about half as strong as medium-strength steel, and are often used for light duty applications, such as securing access panels.

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 5 steel, so you can used these inch-sized nuts for most fastening applications.

These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 2 steel, so they can be used for fastening panels and other light duty fastening applications

These nuts have good chemical resistance and may be mildly magnetic.

Made with fine-pitch threads, vibration is less likely to loosen these metric nuts than those with coarse-pitch threads since the threads sit closer together. Also called jam nuts, they are roughly half the height of standard hex nuts, so they’re good for applications with low clearance.

Choose these nuts for their adherence to strict military standards for material and construction.

These metric nuts are made of 316 stainless steel and half as tall as regular hex nuts—use them around chemicals and salt water when space is limited.

These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.

These nuts tighten to the left and won’t loosen from counterclockwise motion.

One-third the weight of steel, aluminum nuts resist corrosion in wet environments.

Titanium nuts have a high strength-to-weight ratio and are resistant to acids and salt water.

Choose these nuts for their adherence to strict military standards for material and construction.

Also known as small-pattern hex nuts, these are about 20% narrower than standard hex nuts for use in tight spaces where standard hex nuts won't fit.