Wire Inserts

Tangless and tanged inserts are helically-coiled fastening devices that provide permanent, wear-resistant threads, exceeding the strength of most parent materials. Wire inserts are typically made of cold-rolled 304 stainless steel wire (AS7245), work-hardened to a tensile strength above 200,000 psi, and a hardness of Rc 43-50. The finished surface (32 microinches) is exceedingly smooth, virtually eliminating friction-induced thread erosion.

Tangless inserts are a bi-directional, wire design; that install using a drive notch located at either end of the coil insert instead of a tang located at one end of the inserts. After installing a tanged inserts you have to go back and break off the tang, this process is eliminated with Tangless inserts. In blind hole applications the tang must be retrieved, this process is also eliminated with Tangless inserts.

Inserts are available in Unified Coarse (UNC), Unified Fine (UNF), and Metric thread sizes. Inserts can be manufactured using 304 Stainless Steel as well as Nitronic 60^®, Nimonic 90^®, Phosphor Bronze, and more.