Fiber-Sert® Regular Series


Item # 3506L14-22BR


  • Self-tapping and self-locking
  • Lead on both ends simplifies installation
  • Three external flutes give even cutting action
  • Inside threads stay chip-free and clean
  • Coarse, exterior threads give tight lock
  • Inserts won’t split thin sections


Yardley FIBER-SERT Self-Tapping Inserts are internally and externally threaded metal bushings that are installed in wood, particle board, ABS, foamed plastics and other soft materials to provide strong, permanent threads for fastening. They cut their own threads as they are driven (turned) into previously drilled holes and the external flutes provide a balanced cutting action. There are no slots or holes through the wall of the insert so the inside threads stay clean. This permits the driving stud to extend within the whole length of the insert for accurate installation. The coarse, external threads are engineered for maximum resistance to backout and loosening.


Thread Type


Metric Thread Size (A)

Outside Diameter (B)

Length (C)

Length Tolerance (C)

Outside Thread (D)

(+/- .005) (E)


Starting Hole Size

Base Materials

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Installation Methods

Safety Notes

WARNING: This product contains a chemical known to the State of California to cause birth defects or other reproductive harm. Do not use in connection with drinking water. Wash hands after handling.

WARNING: Cancer and Reproductive Harm -