Everbilt 1/4 in.-20 TPI x 30 mm Zinc-Plated Steel Type-E Insert Nut (4-Pack)

These insert nuts are threaded nuts that are either hammered or screwed into material, depending on the insert type. External protrusions bite into surface for a secure hold. Commonly used in furniture applications, the nut receives a machine screw or connecting bolt to fasten pieces together.