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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.