These nuts are suitable for fastening most machinery and equipment.

These 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.

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

Made from Grade 5 steel, these inch-sized nuts are suitable for most fastening applications.

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

Also kown as heavy hex nuts, these nuts are about 10% wider and taller than standard hex nuts to distribute load over a large area.

About half the strength of medium-strength steel extra-wide hex nuts, use these nuts for light duty fastening applications, such as securing access panels.

50% taller than standard hex nuts, these metric nuts provide a larger gripping area for installation with a wrench.

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.

Made from Grade 5 steel, these inch-sized locknuts are suitable for fastening most machinery and equipment.

Get a grip on metric bolts exposed to vibration, wear, and changes in temperature. These metric locknuts have a nylon insert that holds onto bolts without damaging their threads.

These locknuts are about half the height of standard nylon-insert locknuts. Use them in light duty low clearance applications or jam one against a hex nut to hold it in place.

These Grade 8 locknuts are about 25% stronger than medium-strength steel thin locknuts.

Use these locknuts for light duty fastening applications, such as securing access panels.

Also known as Keps and K Lock nuts, these locknuts have a free-spinning tooth lock washer that grips the material surface instead of threads for easy installation and mild vibration resistance.

A conical washer acts as a spring to add tension between the nut and the material surface for easy installation and mild vibration resistance. These metric locknuts have a smooth rim to resist scratching materials when tightened.

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

These metric locknuts have an irregularly shaped thread at the top of the nut that grips the bolt for a stronger hold than nylon-insert locknuts.

These locknuts tighten when turned to the left.

Also known as castle nuts, secure these nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance.

These flange locknuts have serrations that grip the material surface instead of the threads for easy installation and mild vibration resistance.

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

About half the strength of medium-strength steel flange locknuts, these are for light duty fastening applications, such as securing access panels.

Grip metric bolts more securely than nylon-insert flange locknuts—the irregularly shaped threads on these locknuts hold extra tight. They resist vibration and sudden shocks, even after multiple uses.

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 cap nuts, use them in light duty fastening applications, such as securing access panels.

These Grade 5 cap nuts are suitable for fastening most machinery and equipment.

Comparable in strength to Class 10.9 bolts, these nuts are about 25% stronger than medium-strength steel cap nuts.

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

The left-hand threads on these coupling nuts resists loosening from counterclockwise vibration. Use in light duty applications.

Choose these locknuts to fasten standard metric threads. They’re Class 8 steel, so they can be used in most fastening applications.

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

Also known as clinch style captive nuts, press these nuts into a drilled or punched hole with an arbor press or similar pressure tool.

These press-fit nuts have a zinc plating for corrosion resistance in wet environments.

Wings provide more leverage for greater torque while tightening than knurled-head thumb nuts.

These thumb nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. The flange distributes pressure over a large area to reduce stress on your part.

A smooth base provides more contact with the mating surface than weld nuts with projections.

These nuts can be used in channels and tight spaces where round-base weld nuts won't fit.

Weld these nuts to uncoated steel surfaces.

These nuts have three mounting holes to accept screws and rivets for use with thin materials.

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

About half the strength and two-thirds the height of medium-strength steel square nuts, use these metric nuts in light duty, low-clearance applications.

A hex-shaped body provides the highest twist resistance of any rivet nut.

These rivet nuts are mildly corrosion resistant.

These metric nuts have a barrel with multiple threads for secure thread engagement. Also known as U-style clip-on nuts.

A hex-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

A hex-shaped barrel allows these clip-on nuts to be gripped with a wrench to hold them in place when tightening a screw. They have multiple threads for more thread engagement than low-profile clip-on nuts.

These steel panel nuts are zinc plated for corrosion resistance.

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 flange distributes the load over a large area and reduces stress where the nut meets the material surface.

With flexible teeth that slide smoothly over threads of any pitch, these push nuts can be used alone for light-duty applications or as a jam nut.

Attach these slip-on nuts at any point on a threaded rod for quick installation.

Steel inserts have high strength for durability.

Ridges on the barrel of these inserts make them less likely to split hardwood than inserts with prongs. They're often used in wood that has been cut across the growth rings.