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.

DIN 936 nuts are a little taller than DIN 439B nuts, and sometimes slightly wider. While no longer active, DIN 936 is still a commonly referenced standard for material and dimensional compatibility.

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.

These nuts tighten to the left and won’t loosen from counterclockwise motion. Made from brass, they resist corrosion, conduct electricity, and are nonmagnetic. They’re half the height of standard hex nuts, so they’re good for use in low-clearance areas. Jam them against another nut to hold them in place. When used with a standard hex nut, they’re suitable for fastening most equipment.

Nuts that meet DIN 439B comply with international standards for dimensions and materials. Although no longer active, this standard is often referenced for compatibility.

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