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Nut Type Nut Type | Show |
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Locking Type Locking Type |
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 | Nylon Insert |
Hex Nut Profile Hex Nut Profile |
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 | Standard |
Thread Spacing Thread Spacing |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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 | Class 8 |
Specifications Met Specifications Met |
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Thread Direction Thread Direction |
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Insert Maximum Temperature Insert Maximum Temperature |
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About Nuts, Materials, and Finishes
More
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 Although DIN 982 and 985 are no longer active standards, they’re still a common reference point for designers.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 7041-2 standard has replaced the inactive DIN 982 standard. The ISO 7040 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 | ||||||||
| M2.5 | 0.45 | 5 | 3.8 | 220° | DIN 985, ISO 7040 | 50 | 000000000 | 000000 |
Metric 18-8 Stainless Steel Nylon-Insert Locknuts
Made from 18-8 stainless steel, these locknuts have good chemical resistance and may be mildly magnetic. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Metric 18-8 stainless steel is also known as A2 stainless steel.
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. | |
18-8 Stainless Steel | ||||||||
| M2.5 | 0.45 | 5 | 3.8 | 220° | DIN 985 | 100 | 000000000 | 000000 |
Metric Super-Corrosion-Resistant 316
Stainless Steel Nylon-Insert Locknuts
Made from 316 stainless steel, these locknuts have excellent resistance to chemicals and salt water. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use. Metric 316 stainless steel is also known as A4 stainless steel. Nuts may be mildly magnetic.
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. | |
316 Stainless Steel | ||||||||
| M2.5 | 0.45 | 5 | 3.8 | 220° | DIN 985 | 50 | 000000000 | 00000 |