Rivet nut · Reduced head · Knurled cylindrical · Open end — Special thread to be confirmed
Knurled cylindrical body for a round hole. The outer knurling identifies this configuration; correct grip range and installation remain essential.

Identification drawing, not to scale. A: reference projection after installation; actual value depends on installation. Thread pitch is not specified in the catalogue.
Thread identification under review: catalogue tables conflict with the heading. Codes cannot be selected until confirmed.