Threaded inserts are widely used for construction and
repair of Workholders. The most common use for the inserts is to reinforce
threads in new Workholders or to repair threads in existing Workholders.
Threaded inserts provide a way to strengthen threaded holes in new Workholders
where repeated use may cause excessive wear, such as with aluminum or other
soft fixture plates. With existing jigs and fixtures, threaded inserts are a
quick way to fix stripped, damaged, or worn threads. Two primary forms of
threaded inserts are Keenserts and self-tapping threaded inserts.