McMaster 90680A157 Snap-in Nut Zinc-Plated Steel, 3/8"-16 Size, for 0.162"-0.21" Thick Panel

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. Threads float inside the cage, so you can fasten a bolt at a slight angle to align off-center parts. Mounting legs expand to lock these nuts in place.

Install these nuts by hand, with pliers, or with a snap-in nut installation and removal tool.

Zinc-plated steel nuts resist corrosion in wet environments.