These metric nuts have a barrel with multiple threads for secure thread engagement. Also known as U-style clip-on nuts.

Also known as U-nuts, these nuts squeeze both sides of thin panels for a tighter grip than J-nuts.

Because one leg is shorter than the other, you can adjust the position of these nuts before you insert a machine screw. Also known as J-nuts, they have a slightly looser fit on thin panels than U-nuts.

For a stronger grip than J-nuts, these nuts—also known as U-nuts—firmly squeeze thin panels from both sides. Use them as a fastening point for tapping screws.

Snap these nuts—also known as cage nuts—into square holes in thin material. They’re often used to mount servers and other equipment in electronics racks.

Pinch the flexible plastic casing of these nuts to add threads to thin metal. Unlike typical rigid snap-in nuts, these squeeze into a square hole from the front or back of your material.