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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Locking Type Locking Type |
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| Distorted Thread | Steel Insert |
Thread Spacing Thread Spacing |
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Thread Direction Thread Direction |
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Width Width |
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Hex Nut Profile Hex Nut Profile |
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| Standard | Extra Wide |
Drive Style Drive Style |
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 | External Hex |
Height Height |
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Specifications Met Specifications Met |
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Distorted Thread Type Distorted Thread Type |
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 | Top Lock |
About Nuts, Materials, and Finishes
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JIS Medium-Strength Steel Hex Nuts
These metric nuts meet JIS (Japanese Industrial Standard) B1181. Made from Class 8 steel, they're suitable for fastening most machinery and equipment. With a zinc-plated or yellow zinc-plated finish, all resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Yellow Zinc-Plated Steel—Class 8 | |||||||
| M3 | 0.5 | 5.5 | 2.4 | JIS B1181 | 50 | 000000000 | 00000 |
| M4 | 0.7 | 7 | 3.2 | JIS B1181 | 50 | 000000000 | 0000 |
| M5 | 0.8 | 8 | 4 | JIS B1181 | 50 | 000000000 | 0000 |
| M6 | 1 | 10 | 5 | JIS B1181 | 25 | 000000000 | 0000 |
| M8 | 1.25 | 12 | 6.5 | JIS B1181 | 10 | 000000000 | 0000 |
| M10 | 1.25 | 14 | 8 | JIS B1181 | 5 | 000000000 | 0000 |
| M10 | 1.5 | 14 | 8 | JIS B1181 | 5 | 000000000 | 0000 |
| M12 | 1.25 | 17 | 10 | JIS B1181 | 5 | 000000000 | 0000 |
Metric Fine-Thread High-Strength
Steel Hex Nuts—Class 10
Closely spaced metric threads prevent these nuts from loosening due to vibration. About 25% stronger than medium-strength steel nuts, these nuts are comparable in strength to Class 10.9 nuts.
Zinc-plated and yellow zinc-plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Width, mm | Height, mm | Specifications Met | Pkg. Qty. | Pkg. | |
Yellow Zinc-Plated Steel—Class 10 | |||||||
| M8 | 1 | 13 | 6.5 | DIN 934 | 10 | 000000000 | 00000 |
| M10 | 1 | 17 | 8 | DIN 934 | 5 | 000000000 | 0000 |
| M10 | 1.25 | 17 | 8 | DIN 934 | 5 | 000000000 | 0000 |
| M12 | 1.25 | 19 | 10 | DIN 934 | 5 | 000000000 | 0000 |
| M12 | 1.5 | 19 | 10 | DIN 934 | 5 | 000000000 | 0000 |
| M14 | 1.5 | 22 | 11 | DIN 934 | 5 | 000000000 | 0000 |
| M16 | 1.5 | 24 | 13 | DIN 934 | 1 | 000000000 | 0000 |
| M18 | 1.5 | 27 | 15 | DIN 934 | 1 | 000000000 | 0000 |
| M20 | 1.5 | 30 | 16 | DIN 934 | 1 | 000000000 | 0000 |
| M22 | 1.5 | 32 | 18 | DIN 934 | 1 | 000000000 | 0000 |
| M24 | 1.5 | 36 | 19 | DIN 934 | 1 | 000000000 | 0000 |
| M24 | 2 | 36 | 19 | DIN 934 | 1 | 000000000 | 0000 |
| M27 | 2 | 41 | 22 | DIN 934 | 1 | 000000000 | 00000 |
| M30 | 1.5 | 46 | 24 | DIN 934 | 1 | 000000000 | 00000 |
| M30 | 2 | 46 | 24 | DIN 934 | 1 | 000000000 | 00000 |
| M36 | 2 | 55 | 29 | DIN 934 | 1 | 000000000 | 00000 |
Metric Medium-Strength Steel Top-Lock
Distorted-Thread Locknuts—Class 8
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 Class 8.8 bolts, they're suitable for fastening most machinery and equipment. A zinc or yellow-zinc plating provides corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Yellow Zinc-Plated Steel—Class 8 | |||||||
| M36 | 4 | 55 | 36 | DIN 980V | 1 | 000000000 | 00000 |
High-Strength Steel Extra-Wide Steel-Insert
Locknuts for Extreme Vibration—Grade 8
These locknuts are about 10% wider and taller than standard steel-insert locknuts. They distribute the load over a large area. When installed, the steel insert grips the threads and lifts away from the nut body, isolating the insert from the nut’s load to resist spinoff caused by vibration. They're often used in shakers and vibrating equipment. The strength of the bolt should match the strength of the nut to prevent damaging threads. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel locknuts.
Yellow-zinc-plated steel locknuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Each | |
Yellow-Zinc-Plated Steel—Grade 8 | ||||
|---|---|---|---|---|
| 1/2"-13 | 7/8" | 19/32" | 000000000 | 00000 |
| 5/8"-11 | 1 1/16" | 47/64" | 000000000 | 0000 |
| 3/4"-10 | 1 1/4" | 57/64" | 000000000 | 0000 |
| 7/8"-9 | 1 7/16" | 1 1/32" | 000000000 | 0000 |
| 1"-8 | 1 5/8" | 1 11/64" | 000000000 | 00000 |
| 1 1/8"-7 | 1 13/16" | 1 21/64" | 000000000 | 00000 |
| 1 1/4"-7 | 2" | 1 29/64" | 000000000 | 00000 |
| 1 1/2"-6 | 2 3/8" | 1 47/64" | 000000000 | 00000 |
| 2"-4 1/2 | 3 1/8" | 2 11/32" | 000000000 | 00000 |
High-Strength Steel Distorted-Thread Flange Locknuts
An irregularly-shaped thread grips the bolt for a stronger hold than nylon-insert flange locknuts. They have a flange that distributes pressure where the nut meets the material surface, eliminating the need for a separate washer. Grade G locknuts are comparable in strength to Grade 8 bolts. Height includes the flange.
Yellow zinc-plated steel 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. | |
Yellow Zinc-Plated Steel—Grade G | |||||||
| 1/4"-20 | 7/16" | 19/64" | 9/16" | 0.04" | 50 | 000000000 | 00000 |
| 1/4"-28 | 7/16" | 19/64" | 9/16" | 0.04" | 50 | 000000000 | 00000 |
| 5/16"-18 | 1/2" | 23/64" | 11/16" | 0.05" | 25 | 000000000 | 00000 |
| 5/16"-24 | 1/2" | 23/64" | 11/16" | 0.05" | 25 | 000000000 | 00000 |
| 3/8"-16 | 9/16" | 27/64" | 13/16" | 0.06" | 25 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 27/64" | 13/16" | 0.06" | 25 | 000000000 | 00000 |
| 1/2"-13 | 3/4" | 9/16" | 1 1/16" | 0.08" | 10 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 9/16" | 1 1/16" | 0.08" | 10 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 11/16" | 1 21/64" | 0.1" | 10 | 000000000 | 00000 |
| 5/8"-18 | 15/16" | 11/16" | 1 21/64" | 0.1" | 10 | 000000000 | 00000 |
| 3/4"-10 | 1 1/8" | 13/16" | 1 37/64" | 0.11" | 5 | 000000000 | 00000 |