Back Home / Fasteners / Threaded Inserts / KNIFE THREAD INSERT UNC 1/4″-20 BRASS 1/2″ LONG KNIFE THREAD INSERT UNC 1/4″-20 BRASS 1/2″ LONG SKU: XKTI1420 Categories: Fasteners, Threaded Inserts Screws into pilot holes in wooden mounting surfaces and provide a female-threaded mounting point Commonly used with delicate or expensive woods that would deteriorate over time from the tightening and loosening of conventional wood screws. feature specialized threads that bite into the wood and provide their holding power. OAL 1/2″ Case Quantity: 25 Log In For Pricing