System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Thread Pitch Thread Pitch |
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Threading Threading |
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 | Fully Threaded |
 | Partially Threaded |
Material Material |
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Drive Style Drive Style |
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Thread Length Thread Length |
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Thread Spacing Thread Spacing |
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Coupling Nut Profile Coupling Nut Profile |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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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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Thread Type Thread Type |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Thread Direction Thread Direction |
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Finish Finish |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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About Nuts, Materials, and Finishes
More
Metric 18-8 Stainless Steel Coupling Nuts
Made from 18-8 stainless steel, these metric coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Thread | Each | ||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Specifications Met | 1-9 | 10-Up | |
18-8 Stainless Steel | |||||||
| M22 | 2.5 | 66 | 32 | DIN 6334, ASME B18.2.2 | 000000000 | 000000 | 000000 |
Metric Low-Strength Steel Coupling Nuts
Often referred to as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
Black-oxide steel coupling nuts have a dark surface color and are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Metric Medium-Strength Steel Coupling Nuts—Class 8
Often referred to as extension nuts, use these to connect and extend threaded rods. They're comparable in strength to Class 8.8 bolts.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | Each | ||||||
|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Specifications Met | 1-9 | 10-Up | |
Zinc-Plated Steel—Class 8 | |||||||
| M22 | 2.5 | 66 | 32 | DIN 6334, ASME B18.2.2 | 000000000 | 000000 | 000000 |
Stainless Steel Extra-Long Coupling Nuts
These coupling nuts have good chemical resistance. Also known as sleeve nuts, they're at least twice the length of standard coupling nuts to provide more room to connect and extend long lengths of threaded rods.
For technical drawings and 3-D models, click on a part number.
Thread | Each | |||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Lg., mm | Wd., mm | Threading | Min. Thread Lg., mm | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||
| M22 | 2.5 | 132 | 30 | Partially Threaded | 22 | 000000000 | 0000000 | 0000000 |