Half as thick as regular hex nuts, these metric nuts fit into spaces with low height clearances. They’re a good choice for fastening most machinery and equipment. Also known as jam nuts, they can be threaded together to form a locknut that won’t move or loosen due to vibration. When fastening threaded rod, you can use two nuts to create a point for tightening the rod with a wrench. These nuts have less tensile strength than a standard hex nut when used alone. Made of steel, they’re best for dry environments, since moisture and chemicals will cause them to rust.

Zinc- and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.

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.

These nuts are half the height of standard hex nuts, and have closely spaced threads to prevent loosening from vibration. They are not compatible with coarse threads. Use them to fasten most machinery and equipment.

Also known as jam nuts, they can be used in place of standard nuts when height clearances are tight, or threaded together to form a locknut. When fastening threaded rod, you can use two nuts to create a point for tightening the rod into place with a wrench. These nuts have less tensile strength than a standard hex nut when used alone.

All meet ISO or DIN standards for dimensions and material composition to ensure compatibility with other products and tools. DIN 936 and DIN 439B standards are no longer active, but they are commonly referenced globally.

Zinc- and zinc yellow-chromate plated steel nuts resist corrosion in wet environments.

For technical drawings and 3-D models, click on a part number.

Also known as jam nuts, these are about half the height of standard hex nuts. Use in low-clearance applications or jam one against a standard hex nut to hold it in place. They're about 25% stronger than medium-strength steel thin hex nuts.

Zinc yellow-chromate-plated steel nuts are more corrosion resistant in wet environments than zinc-plated steel nuts.

For technical drawings and 3-D models, click on a part number.