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. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.

Zinc-plated steel locknuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Half the height of standard nylon-insert locknuts, use these in low-clearance applications or jam one against a hex nut to hold it in place. They have a nylon insert that grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel thin locknuts. All have a finish that resists corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

These locknuts have good chemical resistance and may be mildly magnetic. They're about half the height of standard nylon-insert locknuts. Use them in low-clearance applications or jam one against a hex nut to hold it in place. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.

For technical drawings and 3-D models, click on a part number.

These locknuts are about 10% wider and taller than standard nylon-insert locknuts and distribute the load over a large area. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Use them in light duty fastening applications, such as securing access panels. A zinc plating provides corrosion resistance in wet environments.

For technical drawings and 3-D models, click on a part number.

An irregularly shaped thread at the top of the nut grips the bolt for a stronger hold than nylon-insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Comparable in strength to Grade 8 bolts, they're about 25% stronger than medium-strength steel locknuts.

Steel locknuts without a finish are ready to be painted or finished.

Black-oxide locknuts are mildly corrosion resistant in dry environments and blend in with dark surfaces.

Black-phosphate, zinc-plated, and zinc yellow-chromate plated locknuts resist corrosion in wet environments.

Zinc-aluminum coated locknuts are more corrosion resistant in wet environments than zinc-plated and zinc yellow-chromate plated locknuts.

Cadmium-plated locknuts resist corrosion in wet environments and have good lubricity, so they thread on smoothly.

For technical drawings and 3-D models, click on a part number.

These locknuts have an irregularly shaped thread at the top of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Made from Grade 5 steel, they're suitable for fastening most machinery and equipment.

Black-oxide locknuts are mildly corrosion resistant in dry environments and blend in with dark surfaces.

Zinc-plated locknuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

These locknuts have an irregularly shaped thread at the top of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. They thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. About 20% stronger than high-strength steel locknuts, they're often used in heavy machinery, such as earth-moving equipment. A cadmium plating provides corrosion resistance in wet environments and adds lubricity so they thread on smoothly.

For technical drawings and 3-D models, click on a part number.

These locknuts have good chemical resistance and may be mildly magnetic. They 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 thread on from the bottom of the nut, allowing more threads to engage the bolt before tightening for easier installation than center-lock distorted thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable.

For technical drawings and 3-D models, click on a part number.

These locknuts have an irregularly shaped thread in the middle of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. They're about three times stronger than low-strength steel locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable.

Zinc yellow-chromate plated steel locknuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

An irregularly shaped thread in the middle of the nut grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable. Use them in light duty fastening applications, such as securing access panels. A zinc plating provides corrosion resistance in wet environments.

For technical drawings and 3-D models, click on a part number.

These locknuts have good chemical resistance and may be mildly magnetic. They have an irregularly shaped thread in the middle of the nut that grips the bolt for a stronger hold than nylon-insert locknuts. Also known as reversible locknuts, they can be threaded on from either end. The strength of the bolt should match the strength of the nut to prevent damaging threads. They're not reusable.

For technical drawings and 3-D models, click on a part number.

Threads at the top of these locknuts expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging the threads. These locknuts have equivalent strength to Grade 8 steel locknuts.

Black-oxide steel locknuts are mildly corrosion resistant and have a dark surface color.

Cadmium-plated steel locknuts are corrosion resistant in wet environments. The plating adds lubricity, so they thread on smoothly.

For technical drawings and 3-D models, click on a part number.

These locknuts have good chemical resistance and may be mildly magnetic. They're about 10% wider than standard flex-top locknuts. They distribute the load over a large area. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads.

For technical drawings and 3-D models, click on a part number.

About half the height and 10% wider than standard hex nuts, use these locknuts in low-clearance applications or jam one against an extra-wide hex nut to hold it in place. Threads at the top of the nut expand to grip the bolt on all sides for a stronger hold than distorted-thread locknuts. The strength of the bolt should match the strength of the nut to prevent damaging threads. These locknuts have equivalent strength to Grade 8 steel locknuts. A cadmium plating provides corrosion resistance in wet environments and adds lubricity so they thread on smoothly.

For technical drawings and 3-D models, click on a part number.

Secure these hex slotted nuts by inserting a cotter pin or safety wire through the slots and a drilled hole in your bolt for mild loosening resistance. They’re not recommended for use on parts exposed to high vibration because the pin is prone to shearing under prolonged stress. Height includes the slots. Cotter pins are not included. They're zinc plated to resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Serrations grip the material surface instead of the threads for easy installation and mild vibration resistance. The flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. About half the strength of medium-strength steel flange locknuts, use them in light duty fastening applications, such as securing access panels. Height includes the flange.

Black-oxide steel flange locknuts are mildly corrosion resistant and have a dark surface color.

Zinc-plated steel flange locknuts resist corrosion in wet environments.

Zinc-aluminum-coated steel flange locknuts are more corrosion resistant than zinc-plated steel flange locknuts. They are comparable to Magni-coated locknuts.

For technical drawings and 3-D models, click on a part number.

These locknuts have a nylon insert that firmly grips threads to resist loosening and a flange that distributes the load over a large area. They’re reusable, but their holding power lessens with each use. Made from Grade F steel, they're comparable in strength to Grade 5 bolts and are suitable for fastening most machinery and equipment. A zinc plating provides corrosion resistance in wet environments. Height includes the flange.

For technical drawings and 3-D models, click on a part number.