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Coupling Nut Profile Coupling Nut Profile |
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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.
Coupling nuts with a black-oxide finish have a dark surface color.
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.
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.
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 | |||||||
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| Size | Pitch, mm | Lg., mm | Wd., mm | Threading | Min. Thread Lg., mm | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||
| M27 | 3 | 162 | 41 | Partially Threaded | 27 | 000000000 | 0000000 | 0000000 |