System of Measurement System of Measurement |
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Thread Size Thread Size |
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Material Material |
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Finish Finish | Show |
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Finish Finish | Hide |
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Nut Type Nut Type | Show |
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 | Locknut |
Locking Type Locking Type |
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 | Distorted Thread |
Hex Nut Profile Hex Nut Profile |
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 | Standard |
Thread Direction Thread Direction |
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 | Right Hand |
Distorted Thread Type Distorted Thread Type |
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| Top Lock | Center Lock |
Thread Fit Thread Fit |
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Thread Spacing Thread Spacing |
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Drive Style Drive Style |
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 | External Hex |
About Nuts, Materials, and Finishes
More
High-Strength Steel Top-Lock
Distorted-Thread Locknuts
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.
Zinc-aluminum coated locknuts are more corrosion resistant in wet environments than zinc-plated and zinc yellow-chromate plated locknuts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Aluminum Coated Steel—Grade C | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 7/32" | 25 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 7/32" | 25 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 17/64" | 10 | 000000000 | 0000 |
| 5/16"-24 | 1/2" | 17/64" | 10 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 21/64" | 10 | 000000000 | 0000 |
| 3/8"-24 | 9/16" | 21/64" | 10 | 000000000 | 0000 |
| 7/16"-14 | 11/16" | 3/8" | 5 | 000000000 | 0000 |
| 7/16"-20 | 11/16" | 3/8" | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 7/16" | 5 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 7/16" | 5 | 000000000 | 0000 |
| 9/16"-12 | 7/8" | 31/64" | 1 | 000000000 | 0000 |
| 9/16"-18 | 7/8" | 31/64" | 1 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 35/64" | 1 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 35/64" | 1 | 000000000 | 0000 |
| 3/4"-10 | 1 1/8" | 41/64" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 41/64" | 1 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 7/8"-14 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 55/64" | 1 | 000000000 | 00000 |
| 1"-14 | 1 1/2" | 55/64" | 1 | 000000000 | 00000 |
High-Strength Steel Center-Lock
Distorted-Thread Locknuts—Grade 8
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-aluminum coated steel locknuts are more corrosion resistant in wet environments than zinc yellow-chromate plated steel locknuts.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Aluminum Coated Steel—Grade 8 | |||||
|---|---|---|---|---|---|
| 1/4"-20 | 7/16" | 7/32" | 10 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 17/64" | 10 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 21/64" | 5 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 7/16" | 5 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 35/64" | 1 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 3/4" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 55/64" | 1 | 000000000 | 0000 |
| 1"-14 | 1 1/2" | 55/64" | 1 | 000000000 | 00000 |