More About Our Self-Tapping/Self-Threading Inserts

Self-threading inserts are brass inserts having both an external and internal thread and two slots which provide cutting edges much the same as a tap. When driven into a cored or drilled hole, the insert cuts its own thread cleanly and evenly. Friction between the insert and the plastic permanently holds it in place after installation. No special tooling is required.

Self-threading inserts can be installed with a tap wrench or with a drill press and tapping head.

Features and benefits:

  • Available in standard or flanged configuration
  • Installs easily into thermoset or thermoplastic materials
  • Slots provide rapid cutting action
  • Flanged configuration provides larger bearing surface


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The availability of the products described on this site, and the product descriptions, may vary from country to country. Consult your STANLEY® Engineered Fastening Account Executive or your local distributor for specific product information.