DST (dual-spaced threads) thread-forming screws allow increased thread engagement in softer thermoplastics.

The high thread height and wide thread spacing of the DST (Dual-Spaced Thread) fastener allows increased thread engagement in softer thermoplastics, increasing resistance to pull-out and improving product performance.

Fast Facts:

  • High thread with a 30° flank angle
  • Smaller minor diameter
  • Greater shear area
  • Shank slot for thread-cutting can be added


  • Requires lower driving torque
  • Reduces cracking of boss
  • Allows use of smaller bosses
  • Increases thread engagement
  • Increases resistance to pull-out

Design Guidelines:

  • Thread Style: High thread with a 30° profile and low thread with 60° profile
  • Head Styles: Pan, hex, flat, oval, hex washer
  • Drive Systems: All styles available; TORX PLUS® Drive System recommended
  • Point Style: Blunt, gimlet, pilot

Disclaimer: TORX PLUS® is registered trademark of Acument Intellectual Properties.

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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.