KEENSERTS® threaded inserts are the perfect solution to prevent threads from becoming stripped in fields like mechanical or precision engineering, aviation and aerospace. KEENSERTS® are made of stainless steel 1.4305 / AISI 303. They are extremely durable and withstand numerous loosening and tightening cycles without thread stripping. They can be readily used in light metal, steel or cast iron application. They can also be used as an easy and efficient replacement for damaged threads in expensive components.