For quick building up the secure female threads by installing a Rivet Nut in the thin base metals and pipes with Weldless, Tapping-Free and One-Side Work to fasten with a Bolt or Screw.

With 5 Threaded Mandrels and 5 sizes of Rivet Nuts packed in Polybags: 6-32", 8-32", 10-24", 10-32", 1/4-20".