E-Z LOK 400-428 Threaded Insert, Brass, Knife Thread, 1/4"-28 Internal Threads, 0.500" Length (Pack of 25)

E-Z LOK Knife Thread inserts for hard wood significantly reduce the possibility of stripping when using a threaded fasteners in materials such as oak, cherry, and maple. Ideal for applications ranging from furniture to cabinetry to storm shutters, E-Z LOK Knife Threads are easily installed using a standard screwdriver or optional drive tool. Simply drill the appropriately sized hole and thread in the insert like an ordinary fastener. Proprietary external Knife Threads slice into hard wood, providing holding power superior to that of typical broad threads which crush wood during installation.