Fastener Strength Grade/Class Fastener StrengthGrade/Class  | Show |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class | Hide |
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System of Measurement System of Measurement |
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Locking Type Locking Type |
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| Nylon Insert | Distorted Thread |
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Thread Direction Thread Direction |
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Hex Nut Profile Hex Nut Profile |
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 | Standard |
Distorted Thread Type Distorted Thread Type |
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| Top Lock | Center Lock |
Drive Style Drive Style |
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Thread Fit Thread Fit |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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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Insert Maximum Temperature Insert Maximum Temperature |
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About Nuts, Materials, and Finishes
More
Low-Strength Steel Top-Lock Distorted-Thread Locknuts
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 half the strength of medium-strength steel locknuts, 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.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 2 | |||||
|---|---|---|---|---|---|
| 6-32 | 5/16" | 7/64" | 100 | 000000000 | 000000 |
| 8-32 | 11/32" | 1/8" | 100 | 000000000 | 0000 |
| 10-24 | 3/8" | 1/8" | 100 | 000000000 | 00000 |
| 10-32 | 3/8" | 1/8" | 100 | 000000000 | 00000 |
| 1/4"-20 | 7/16" | 7/32" | 100 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 7/32" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 17/64" | 100 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 17/64" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 21/64" | 50 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 21/64" | 50 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 7/16" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 7/16" | 25 | 000000000 | 00000 |
Low-Strength Steel Center-Lock Distorted-Thread Locknuts
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.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Grade 2 | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 7/32" | 100 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 7/32" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 17/64" | 100 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 17/64" | 100 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 21/64" | 100 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 21/64" | 100 | 000000000 | 00000 |
| 7/16"-14 | 11/16" | 3/8" | 50 | 000000000 | 00000 |
| 7/16"-20 | 11/16" | 3/8" | 50 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 7/16" | 50 | 000000000 | 00000 |
| 1/2"-20 | 3/4" | 7/16" | 50 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 35/64" | 25 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 35/64" | 25 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 41/64" | 10 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 41/64" | 10 | 000000000 | 00000 |
| 1"-14 | 1 1/2" | 55/64" | 5 | 000000000 | 00000 |
Nylon-Insert Cap Locknuts
The nylon cap covers and grips the threads to resist loosening. They’re reusable, but their holding power lessens with each use. Nuts are steel with a nylon 6/6 cap and insert.
Zinc-plated nuts have a layer of zinc that protects the steel from rust in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Insert Max. Temp., °F | Pkg. Qty. | Pkg. | |
Steel—Grade 2 | |||||||
| 8-32 | 9/64" | 11/32" | 23/64" | 250° | 25 | 000000000 | 00000 |
| 10-32 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
| 1/4"-20 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
| 1/4"-28 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
| 5/16"-24 | 1/4" | 1/2" | 1/2" | 250° | 25 | 000000000 | 0000 |
| 3/8"-24 | 21/64" | 9/16" | 5/8" | 250° | 25 | 000000000 | 00000 |
Zinc-Plated Steel—Grade 2 | |||||||
| 8-32 | 9/64" | 11/32" | 23/64" | 250° | 25 | 000000000 | 0000 |
| 10-24 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
| 10-32 | 9/64" | 3/8" | 23/64" | 250° | 25 | 000000000 | 0000 |
| 1/4"-20 | 7/32" | 7/16" | 31/64" | 250° | 25 | 000000000 | 0000 |
| 5/16"-18 | 1/4" | 1/2" | 1/2" | 250° | 10 | 000000000 | 0000 |
| 3/8"-16 | 21/64" | 9/16" | 5/8" | 250° | 25 | 000000000 | 00000 |