System of Measurement System of Measurement |
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Thread Type Thread Type |
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Hex Nut Profile Hex Nut Profile |
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![]() | Thin |
Finish Finish | Show |
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Finish Finish | Hide |
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Material Material |
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Nut Type Nut Type |
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![]() | Hex |
Thread Direction Thread Direction |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Thread Spacing Thread Spacing |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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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 Fit Thread Fit |
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Drive Style Drive Style |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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About Nuts, Materials, and Finishes
More
Low-Strength Steel Thin Hex Nuts

Also known as jam nuts, these are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels. Some of these screws meet ISO and DIN dimensional standards.
The distinctive coloring on blue-dyed steel nuts makes them easy to distinguish from inch-size nuts.
Nuts that meet ISO 4035 (formerly DIN 439B) adhere to international standards for dimensions and material composition to ensure compatibility with other products and tools. Although the DIN 439B standards are no longer active, they are commonly referenced globally.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
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| Size | Pitch, mm | Spacing | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Blue Dyed Steel—Class 04 | ||||||||
| M6 | 1 | Coarse | 10 | 3.2 | DIN 439B, ISO 4035 | 50 | 000000000 | 00000 |
| M8 | 1.25 | Coarse | 13 | 4 | DIN 439B, ISO 4035 | 50 | 000000000 | 0000 |
| M10 | 1.5 | Coarse | 17 | 5 | DIN 439B, ISO 4035 | 50 | 000000000 | 0000 |
| M12 | 1.75 | Coarse | 19 | 6 | DIN 439B, ISO 4035 | 25 | 000000000 | 0000 |
| M16 | 2 | Coarse | 24 | 8 | DIN 439B, ISO 4035 | 10 | 000000000 | 0000 |
| M20 | 2.5 | Coarse | 30 | 10 | DIN 439B, ISO 4035 | 10 | 000000000 | 00000 |
| M24 | 3 | Coarse | 36 | 12 | DIN 439B, ISO 4035 | 1 | 000000000 | 0000 |






























