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Nut Type Nut Type | Show |
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Nylon Insert | Serrations |
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Lock Washer |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Washer Material Washer Material |
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Insert Maximum Temperature Insert Maximum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Washer OD Washer OD |
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About Nuts, Materials, and Finishes
More
Low-Strength Steel Nylon-Insert Locknuts

These locknuts 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. About half the strength of medium-strength steel locknuts, they're for light duty fastening applications, such as securing access panels.
Zinc-plated steel locknuts are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
---|---|---|---|---|---|---|
12-24 | 7/16" | 5/16" | 220° | 100 | 000000000 | 00000 |
18-8 Stainless Steel Nylon-Insert Locknuts

These locknuts have good chemical resistance and may be mildly magnetic. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts

These locknuts have excellent resistance to chemicals and salt water. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. They may be mildy magnetic.
For technical drawings and 3-D models, click on a part number.
Thread Size | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
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12-24 | 7/16" | 5/16" | 220° | 50 | 000000000 | 00000 |
Low-Strength Steel Thin Nylon-Insert Locknuts

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.
Steel Locknuts with External-Tooth Lock Washer

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. Height includes the thickness of the washer. A zinc plating provides corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Washer | |||||||
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Thread Size | Wd. | Ht. | Material | OD | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||
12-24 | 7/16" | 3/16" | Steel | 0.5" | 50 | 000000000 | 000000 |
Stainless Steel Locknuts with External-Tooth Lock Washer

These stainless steel locknuts have good chemical resistance and may be mildly magnetic. Also known as Keps and K-Lock nuts, they have a free-spinning tooth lock washer that grips the material surface instead of threads for easy installation and mild vibration resistance. Height includes the thickness of the washer.
For technical drawings and 3-D models, click on a part number.
Washer | |||||||
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Thread Size | Wd. | Ht. | Material | OD | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
Standard Hex Nut Profile | |||||||
12-24 | 7/16" | 11/64" | 400 Stainless Steel | 0.5" | 50 | 000000000 | 000000 |
Low-Strength Steel Serrated Flange Locknuts

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.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Serrated Flange Locknuts

Made from 18-8 stainless steel, these flange locknuts have good chemical resistance and may be mildly magnetic. 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. Height includes the flange.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
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Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
12-24 | 7/16" | 15/64" | 19/32" | 0.04" | 10 | 000000000 | 000000 |