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.

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.

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

These metric nuts meet JIS (Japanese industrial Standard) B 1181.

Comparable in strength to Grade 5 steel and as resistant to chemicals and salt water as 316 stainless steel.

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

With threads that tighten to the left and made of 316 stainless steel, these nuts won’t loosen from counterclockwise motion in saltwater and corrosive environments. They’re half the height of standard hex nuts, so they fit where there’s low clearance.

Comparable in strength to Class 12.9 bolts.

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 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.

Made from low-strength steel, these locknuts should be used for light duty fastening applications, such as securing.access panels.

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

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

Made from stainless steel, these metric flex-top locknuts resist chemicals and may be mildly magnetic.

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.

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.

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.

Skip the washer—these metric stainless steel nuts have a flange that does the same job, spreading pressure across its surface for a strong hold.

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.

A smooth rounded body provides a finished look.

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

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

These metric lead screws and nuts have broad, square threads that are well suited for quick assembly, high clamping forces, and lifting and lowering heavy objects. They're commonly found in hand-powered clamps, vises, grates, doors, and work tables.

Multiple thread channels (also known as thread starts) create faster linear travel than lead screws with a single thread start.

Internal ball bearings provide smooth low-friction travel in applications that require high speeds, accurate positioning, and repeatable movement. Also known as single-start metric ball screws and nuts, these have a single thread that runs the length of the screw.

Often paired with spring lock washers to strengthen their hold, these retaining nuts—also known as shaft nuts—keep vibration from shifting bearings, bushings, pulleys, and gears on your threaded shaft or spindle.

Designed to slide into T-slot tracks on machine tool tables, use these nuts to secure clamps and workpieces.

For mounting items to your machine table, these kits contain the full system of necessary components.

Secure threaded plastic conduit fittings to a knockout in an outlet box or enclosure.