Thread Size Thread Size |
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Material Material |
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Finish Finish |
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Hex Nut Profile Hex Nut Profile | Show |
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 | High |
Hex Nut Profile Hex Nut Profile | Hide |
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| Standard | Thin |
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| Extra Wide | Narrow |
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| High | Extra-Wide Thin |
Thread Pitch Thread Pitch |
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Height Height |
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Width Width |
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Locking Type Locking Type |
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 | Nylon Insert |
Thread Direction Thread Direction |
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Drive Style Drive Style |
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 | External Hex |
Insert Maximum Temperature Insert Maximum Temperature |
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About Nuts, Materials, and Finishes
More
Steel High Hex Nuts
With a height that is 50% taller than standard hex nuts, these nuts provide a larger gripping area for installation with a wrench.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 3/8"-16 | 9/16" | 17/32" | SAE J995 | 1 | 000000000 | 00000 |
| 3/8"-24 | 9/16" | 17/32" | SAE J995 | 1 | 000000000 | 0000 |
| 7/16"-20 | 5/8" | 39/64" | SAE J995 | 25 | 000000000 | 0000 |
| 1/2"-13 | 3/4" | 11/16" | SAE J995 | 1 | 000000000 | 0000 |
| 1/2"-20 | 3/4" | 11/16" | SAE J995 | 25 | 000000000 | 00000 |
| 9/16"-18 | 7/8" | 49/64" | SAE J995 | 10 | 000000000 | 0000 |
| 5/8"-11 | 15/16" | 27/32" | SAE J995 | 1 | 000000000 | 0000 |
| 5/8"-18 | 15/16" | 27/32" | SAE J995 | 10 | 000000000 | 0000 |
| 3/4"-10 | 1 1/16" | 1" | SAE J995 | 1 | 000000000 | 00000 |
| 3/4"-16 | 1 1/8" | 1" | SAE J995 | 10 | 000000000 | 00000 |
| 7/8"-14 | 1 5/16" | 1 5/32" | SAE J995 | 5 | 000000000 | 0000 |
| 1"-8 | 1 1/2" | 1 5/16" | SAE J995 | 1 | 000000000 | 00000 |
| 1"-14 | 1 7/16" | 1 5/16" | SAE J995 | 5 | 000000000 | 00000 |
| 1 1/4"-12 | 1 13/16" | 1 5/8" | SAE J995 | 1 | 000000000 | 0000 |
| 1 1/2"-12 | 2 3/16" | 2" | SAE J995 | 1 | 000000000 | 00000 |
Metric Steel High Hex Nuts
These nuts are 50% taller than standard hex nuts and provide a larger gripping area for installation with a wrench. They're zinc plated to 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 | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Class 6 | ||||||
| M2 | 0.4 | 4 | 2 | 25 | 000000000 | 00000 |
| M2.5 | 0.45 | 5 | 2.5 | 25 | 000000000 | 00000 |
| M3 | 0.5 | 5.5 | 3 | 50 | 000000000 | 0000 |
| M4 | 0.7 | 7 | 4 | 50 | 000000000 | 0000 |
| M5 | 0.8 | 8 | 5 | 50 | 000000000 | 0000 |
Zinc-Plated Steel—Class 8 | ||||||
| M6 | 1 | 10 | 6 | 100 | 000000000 | 00000 |
| M8 | 1.25 | 13 | 8 | 50 | 000000000 | 00000 |
| M10 | 1.5 | 17 | 10 | 25 | 000000000 | 0000 |
| M12 | 1.75 | 19 | 12 | 10 | 000000000 | 0000 |
| M14 | 2 | 22 | 14 | 10 | 000000000 | 00000 |
| M16 | 2 | 24 | 16 | 10 | 000000000 | 00000 |
| M20 | 2.5 | 30 | 20 | 5 | 000000000 | 00000 |
| M24 | 3 | 36 | 24 | 1 | 000000000 | 0000 |
| M30 | 3.5 | 46 | 28 | 1 | 000000000 | 0000 |
Stainless Steel High Hex Nuts
These 18-8 stainless steel nuts have good chemical resistance and may be mildly magnetic. They are 50% taller than standard hex nuts and provide a larger gripping area for installation with a wrench.
For technical drawings and 3-D models, click on a part number.
Metric Medium-Strength Steel
Nylon-Insert Locknuts—Class 8
Made from medium-strength steel with a nylon insert, these Class 8 metric locknuts are strong enough to use on most machinery and equipment that’s prone to vibration and temperature changes. The nylon insert also won’t damage the threads on your bolt. All are reusable, but their holding power lessens with each use. Pair them with compatible Class 8.8 metric bolts.
These locknuts meet the dimensional and material standards of DIN and ISO that make sure they're compatible with other parts and tools. Although DIN 982 and 985 are no longer active standards, they’re still a common reference point for designers. With only slight differences in tolerance, the ISO 7040 standard has replaced the inactive DIN 982 standard. The ISO 10511 standard is similar to the inactive DIN 985 standard, except the overall height is a little taller.
Zinc-plated steel locknuts are a good option in dry environments. The zinc plating prevents the steel from corroding until the plating wears away.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Insert Max. Temp., °F | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Class 8 | ||||||||
| M4 | 0.7 | 7 | 5.3 | 220° | DIN 982, ISO 7040 | 100 | 000000000 | 00000 |
| M5 | 0.8 | 8 | 6.3 | 220° | DIN 982, ISO 7040 | 100 | 000000000 | 0000 |
| M6 | 1 | 10 | 8 | 220° | DIN 982, ISO 7040 | 100 | 000000000 | 00000 |
| M8 | 1.25 | 13 | 9.5 | 220° | DIN 982, ISO 7040 | 50 | 000000000 | 0000 |
| M10 | 1.5 | 17 | 11.5 | 220° | DIN 982, ISO 7040 | 25 | 000000000 | 0000 |
| M12 | 1.75 | 19 | 14 | 220° | DIN 982, ISO 7040 | 25 | 000000000 | 00000 |
| M14 | 2 | 22 | 16 | 220° | DIN 982, ISO 7040 | 10 | 000000000 | 0000 |
| M16 | 2 | 24 | 18 | 220° | DIN 982, ISO 7040 | 10 | 000000000 | 00000 |
| M18 | 2.5 | 27 | 20 | 220° | DIN 982, ISO 7040 | 5 | 000000000 | 00000 |
| M20 | 2.5 | 30 | 22 | 220° | DIN 982, ISO 7040 | 1 | 000000000 | 0000 |
| M22 | 2.5 | 32 | 25 | 220° | DIN 982, ISO 7040 | 1 | 000000000 | 0000 |
| M24 | 3 | 36 | 28 | 220° | DIN 982, ISO 7040 | 1 | 000000000 | 0000 |
Metric High-Strength Steel Flange Nuts—Class 10
Also known as collar nuts, these metric nuts have a flange that distributes pressure across the surface, so you don't need a washer. Because of the flange, they may not fit in tight spaces. Made of high-strength Class 10 steel, they’re about 25% stronger than medium-strength steel flange nuts. Their strength is comparable to Class 10.9 bolts.
When choosing your finish, consider your environment. Nuts with a black-oxide finish have mild corrosion resistance, but only in dry environments.
ISO 4161 (formerly DIN 6923) and DIN 6331 nuts meet international standards for flange nut dimensions and materials.
Thread | Flange | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Wd., mm | Ht., mm | Dia., mm | Thick., mm | Specifications Met | Pkg. Qty. | Pkg. | |
High Profile | |||||||||
Black-Oxide Steel—Class 10 | |||||||||
| M6 | 1 | 10 | 9 | 14 | 3 | DIN 6331 | 50 | 000000000 | 000000 |
| M8 | 1.25 | 13 | 12 | 18 | 3.5 | DIN 6331 | 25 | 000000000 | 00000 |
| M10 | 1.5 | 16 | 15 | 22 | 4 | DIN 6331 | 10 | 000000000 | 0000 |
| M12 | 1.75 | 18 | 18 | 25 | 4 | DIN 6331 | 10 | 000000000 | 00000 |
| M14 | 2 | 22 | 21 | 28 | 4 | DIN 6331 | 5 | 000000000 | 00000 |
| M16 | 2 | 24 | 24 | 31 | 5 | DIN 6331 | 5 | 000000000 | 00000 |
| M18 | 2.5 | 27 | 27 | 34 | 5 | DIN 6331 | 1 | 000000000 | 0000 |
| M20 | 2.5 | 30 | 30 | 37 | 6 | DIN 6331 | 1 | 000000000 | 0000 |
| M24 | 3 | 36 | 36 | 45 | 6 | DIN 6331 | 1 | 000000000 | 0000 |
| M30 | 3.5 | 46 | 45 | 58 | 8 | DIN 6331 | 1 | 000000000 | 00000 |
| M36 | 4 | 55 | 54 | 68 | 10 | DIN 6331 | 1 | 000000000 | 00000 |