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 Type Thread Type |
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Hex Nut Profile Hex Nut Profile |
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 | Thin |
Material Material |
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Finish Finish |
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Thread Spacing Thread Spacing |
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Thread Direction Thread Direction |
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Thread Fit Thread Fit |
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Drive Style Drive Style |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Threading Threading |
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 | Fully Threaded |
Thumb Nut Head Shape Thumb Nut Head Shape |
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Fastener Strength Grade/Class Fastener Strength Grade/Class |
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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.
Zinc-plated and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.
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 Although the DIN 439B standards are no longer active, they are commonly referenced globally.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 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Spacing | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel—Class 04 | ||||||||
| M2.5 | 0.45 | Coarse | 5 | 1.6 | DIN 439B, ISO 4035 | 100 | 000000000 | 00000 |
Metric 18-8 Stainless Steel Thin Hex Nuts
Useful in low-clearance applications, these metric nuts are roughly half the height of standard hex nuts, but aren’t as strong. Commonly used as locknuts, threading a thin nut against any other hex nut prevents loosening caused by vibration. You can also use them as jam nuts by threading two of these thin nuts against each other on a threaded rod to create a gripping point for turning the rod without damaging its threads. All are 18-8 stainless steel, which is nearly as strong as steel but won’t rust in outdoor, washdown, and other corrosive environments.
ISO 4035 nuts are functionally the same as DIN 439B nuts (sometimes called DIN 439-2), but have slightly different width tolerances. These nuts have chamfered edges that make them less sharp than DIN 936 nuts.
For technical drawings and 3-D models, click on a part number.
Metric Super-Corrosion-Resistant 316 Stainless Steel Thin Hex Nuts
These metric nuts are made of 316 stainless steel and half as tall as regular hex nuts—use them around chemicals and salt water when space is limited. Also known as jam nuts, they can be tightened in pairs to prevent loosening from vibration. Jamming two of these nuts together can also create a gripping point on a threaded rod, letting you use a wrench to turn the rod without damaging the threads.
ISO 4035 (formerly DIN 439B) nuts are chamfered, so their edges are less sharp than DIN 936 nuts. This new ISO standard is functionally the same as the DIN standard it replaced, with slightly different tolerances for width.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Spacing | Wd., mm | Ht., mm | Specifications Met | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||||
| M2.5 | 0.45 | Coarse | 5 | 1.6 | DIN 439B; ISO 4035 | 50 | 000000000 | 00000 |
Metric Brass Thin Hex Nuts
Made from brass, these metric nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. About half the height of standard hex nuts, they are useful in low-clearance applications but have less tensile strength. Also known as jam nuts, they help prevent loosening from vibration when tightened in pairs. Two nuts jammed together also function as a gripping point on a threaded rod, so you can turn the rod without damaging the threads.
Nickel-plated brass nuts have excellent resistance to chemicals and salt water.
DIN 439B nuts are chamfered, so their edges are less sharp than DIN 936 nuts. DIN 439B was replaced by ISO 4035 but remains a common reference point. The ISO standard has slightly different tolerances for width.
For technical drawings and 3-D models, click on a part number.
Metric 18-8 Stainless Steel Flanged Knurled-Head Thumb Nuts
Made from 18-8 stainless steel, these thumb nuts have good chemical resistance and may be mildly magnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
Passivated stainless steel nuts provide added protection against oxidation and corrosion.
For technical drawings and 3-D models, click on a part number.
Metric Brass Flanged Knurled-Head Thumb Nuts
Made from zinc-plated brass, these thumb nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. The flange distributes the load over a large area and reduces stress where the nut meets the material surface. A knurled head provides a slip-resistant grip for controlled adjustment.
For technical drawings and 3-D models, click on a part number.
Thread | Collar | ||||||
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| Size | Pitch, mm | Dia., mm | Ht., mm | Head Dia., mm | Ht., mm | Each | |
Zinc-Plated Brass | |||||||
| M2.5 | 0.45 | 5 | 3 | 6 | 6 | 000000000 | 00000 |
Metric 18-8 Stainless Steel Knurled-Head Thumb Nuts
Made from 18-8 stainless steel, these metric thumb nuts have good chemical resistance and may be mildly magnetic. The head is knurled for slip-resistant controlled adjustment and the collar raises the head to make it easy to grip.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.