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

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

About 25% stronger than medium-strength steel nuts, these nuts are comparable in strength to class 10.9 nuts.

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

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

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

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

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

Stronger than PTFE nuts and resistant to solvents, bases, and acids—including hydrochloric and nitric acid—these PVDF nuts are often used in chemical processing equipment.

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

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

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

Useful in low-clearance applications, these metric nuts are roughly half the height of standard hex nuts, but aren’t as strong. All are 18-8 stainless steel, which is nearly as strong as steel but won’t rust in outdoor, washdown, and other corrosive environments.

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.

Made from brass, these metric nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. About half the height of standard hex nuts, they are useful in low-clearance applications but have less tensile strength.

A nylon insert keeps metric bolt threads from coming loose due to vibration, wear, and temperature swings. About 25% stronger than medium-strength steel locknuts, these nuts are made of high-strength, Class 10 steel.

These metric locknuts have good chemical resistance.

With a shorter hex height than standard DIN 985 locknuts, these nylon-insert locknuts meet international ISO 10511 dimensional standards and are easy to install in tight spaces.

These metric stainless steel locknuts have good chemical resistance and may be mildly magnetic.

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

These locknuts have good chemical resistance.

Threads at the top of these metric locknuts expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts.

Secure these metric nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. Often referred to as castle nuts.

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.

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

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.

No need for a washer—these metric medium-strength steel nuts have a flange that distributes pressure across its surface the way a washer does. Made of medium-strength, Class 8 steel, they’re suitable for fastening most machinery and equipment.

About half the strength of medium-strength steel flange nuts, use these metric nuts in light duty fastening applications, such as securing access panels.

These flange nuts have a black-oxide finish for mild corrosion resistance in dry environments.

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

These metric nuts are about half the strength of medium-strength steel cap nuts. Use them in light duty fastening applications, such as securing access panels.

These metric nylon 6/6 cap nuts are chemical resistant, nonconductive, and lightweight.

For light duty applications, choose these metric-sized coupling nuts.

These metric-sized coupling nuts are Class 10 steel, so they’re about 25% stronger than medium-strength steel coupling nuts.

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

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

Stainless steel coupling nuts have excellent corrosion resistance in most environments.

Press these metric nuts into a drilled or punched hole with an arbor press or similar pressure tool.

A flat hex head sits flush against the material surface for use in low-clearance applications.

These metric wing nuts provide more leverage for greater torque while tightening than knurled-head thumb nuts.

Made from 316 stainless steel, these metric wing nuts have excellent chemical resistance and can be used in saltwater environments.

Made from 18-8 stainless steel, these metric thumb nuts have good chemical resistance and may be mildly magnetic.

These metric thumb nuts have good chemical resistance. The flange distributes pressure over a large area to reduce stress on your part.

A smooth base on these metric nuts provides more contact with the mating surface than weld nuts with projections

Weld these nuts to stainless steel surfaces.

Projections on the base concentrate the weld and provide room for heat to dissipate.

Weld these nuts to stainless steel surfaces.

You can weld these metric nuts to flat and uneven uncoated stainless steel surfaces for a strong permanent hold.

Threads float inside the retainer of these metric nuts so you can install a bolt at a slight angle to align with off center parts.

About half the strength of medium-strength steel square nuts, use these metric nuts in light duty fastening applications, such as securing access panels.

Two-thirds the height of typical square nuts and made of stainless steel, these metric nuts are designed for use in low-clearance applications in humid, damp, and washdown environments.

About twice as strong as aluminum rivet nuts, these steel rivet nuts are zinc plated for mild corrosion resistance.

These aluminum rivet nuts are one-third the weight of steel rivet nuts and have mild corrosion resistance.

About twice as strong as aluminum rivet nuts, these low-profile rivet nuts have a cadmium or tin-zinc plating for corrosion resistance.

These low-profile rivet nuts are one-third the weight of steel and have mild corrosion resistance.

These rivet nuts are mildly corrosion resistant.

The thread area is enclosed, which prevents leakage past the threads from either side of your application.

Stronger than stainless steel, these nuts are comparable in strength to Grade 9 bolts.

Tri-groove nuts are narrower than sloped and drilled spanner nuts to fit in tight spaces. Install with a tri-groove socket bit and either a drive handle or an open-end wrench.

A wide base and large bearing surface make these nuts good for securing large objects. Install with a spanner driver.

Snap these nuts into square holes in thin materials.

Steel inserts have high strength for durability.

The most corrosion resistant tee nut inserts we offer, these inserts stand up to chemicals and salt water.

Large threads cut into softwood such as particleboard for a strong hold.

Made from brass, these inserts are nonmagnetic, mildly corrosion resistant, and electrically conductive.

Use these barrels with a screw you already have or pair with a different type of screw to create a custom fastener. Made from 316 stainless steel, they have excellent chemical resistance and can be used in saltwater environments.

Stainless steel thumb screws have excellent corrosion resistance in most environments.

In addition to joining male- and female-threaded parts, these adapters can increase or decrease metric thread sizes and change the thread pitch.

Increase or decrease metric thread size from one male-threaded part to another. Commonly used to connect two differently sized threaded rods, they have a hex-shaped body, so you can tighten them with a standard wrench.

Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench.