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Fastener Strength Grade/Class Fastener StrengthGrade/Class  | Show |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class | Hide |
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| Grade 5 | Grade 8 |
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| Grade F | Grade G |
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| Class 8 | Class 10 |
System of Measurement System of Measurement |
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Thread Size Thread Size |
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Material Material |
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Thread Direction Thread Direction |
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Hex Nut Profile Hex Nut Profile |
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 | Standard |
Locking Type Locking Type |
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 | Serrations |
Drive Style Drive Style |
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Thread Spacing Thread Spacing |
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Thread Fit Thread Fit |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Nuts, Materials, and Finishes
More
High-Strength Steel Serrated Flange Locknuts—Grade 8
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. They're about 25% stronger than medium-strength steel flange locknuts. Height includes the flange.
Zinc-plated steel flange locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.08" | 100 | 000000000 | 000000 |
| 5/16"-18 | 1/2" | 9/32" | 43/64" | 0.1" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.1" | 100 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.13" | 25 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.15" | 10 | 000000000 | 0000 |
Black-Oxide Steel—Grade 8 | |||||||
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 10 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 5 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 43/64" | 1 1/2" | 0.06" | 1 | 000000000 | 0000 |
Phosphate-Coated Steel—Grade 8 | |||||||
| 3/4"-10 | 1 1/8" | 43/64" | 1 1/2" | 0.17" | 10 | 000000000 | 00000 |
Black-Phosphate Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 50 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 25 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 25 | 000000000 | 0000 |
Zinc-Plated Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 50 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 25 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 25 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 10 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Steel—Grade 8 | |||||||
| 9/16"-12 | 7/8" | 1/2" | 1 3/16" | 0.05" | 5 | 000000000 | 0000 |
High-Strength Steel Flange Nuts—Grade 8
A flange distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. Made from Grade 8 steel, these nuts are about 25% stronger than medium-strength steel flange nuts. Height includes the flange.
Zinc-plated, zinc yellow-chromate plated, and black-phosphate steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Flange | |||||||
|---|---|---|---|---|---|---|---|
| Thread Size | Wd. | Ht. | Dia. | Thick. | Pkg. Qty. | Pkg. | |
Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 000000 |
| 1/4"-28 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 25 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 10 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 29/64" | 1 1/32" | 0.05" | 10 | 000000000 | 00000 |
| 9/16"-18 | 7/8" | 1/2" | 1 3/16" | 0.05" | 5 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 5 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 9/16" | 1 9/32" | 0.05" | 5 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 1 | 000000000 | 0000 |
| 7/8"-9 | 1 5/16" | 51/64" | 1 3/4" | 0.08" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 57/64" | 2 1/16" | 0.08" | 1 | 000000000 | 0000 |
| 1"-14 | 1 1/2" | 57/64" | 2 1/16" | 0.08" | 1 | 000000000 | 0000 |
Zinc-Plated Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 50 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 25 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 10 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 10 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 5 | 000000000 | 00000 |
Zinc Yellow-Chromate Plated Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 10 | 000000000 | 0000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 10 | 000000000 | 0000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 10 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 10 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 5 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 9/16" | 1 9/32" | 0.05" | 5 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 1 | 000000000 | 0000 |
| 3/4"-16 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 1 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 57/64" | 2 1/16" | 0.08" | 1 | 000000000 | 0000 |
Black-Phosphate Steel—Grade 8 | |||||||
| 1/4"-20 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 15/64" | 19/32" | 0.04" | 100 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 9/32" | 11/16" | 0.04" | 100 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 9/32" | 11/16" | 0.04" | 100 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 11/32" | 3/4" | 0.04" | 50 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 29/64" | 1 1/32" | 0.05" | 25 | 000000000 | 00000 |
| 1/2"-20 | 3/4" | 29/64" | 1 1/32" | 0.05" | 25 | 000000000 | 00000 |
| 5/8"-11 | 15/16" | 9/16" | 1 9/32" | 0.05" | 10 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 9/16" | 1 9/32" | 0.05" | 10 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 10 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 21/32" | 1 1/2" | 0.06" | 10 | 000000000 | 00000 |
| 7/8"-14 | 1 5/16" | 51/64" | 1 3/4" | 0.08" | 1 | 000000000 | 0000 |