Delta PT® thread-forming screws are engineered to create optimal material flow during installation, resulting in better clamp loads and increased joint life in a wide range of plastic materials.

Delta PT® fasteners are engineered to provide maximum performance in a wide range of thermoplastics. An improved design results in a stronger fastener that creates optimal material flow during installation, providing higher performance, better clamp loads, and increased joint life.

Installation with TORX PLUS® Drive is recommended to facilitate the proper amount of torque transfer required for forming threads.

Fast Facts:

  • Thread-forming fasteners for plastic and composite materials
  • Minimizes radial stress
  • Offers increased fatigue life
  • Provides increased torsional and tensile strength
  • Can achieve higher clamp loads and seating torques
  • Flank geometry provides better material flow during installation and high flank engagement
  • Larger fastener cross-section increases shear area and fastener strength
  • Optimized pitch allows high clamp load with smaller contact pressure
  • May permit use of shorter fasteners and/or smaller diameters, if necessary


  • Sizes: Delta PT® 14-70 (1.4mm-7.0mm)
  • Head Styles: Can be used with any head design
  • Specials: Shoulder screws, SEMS, double-end studs, collar studs
  • Drive Systems: TORX PLUS® Drive System recommended
  • Other styles also available

Disclaimer:  Delta PT® is registered trademark of EJOT GmbH and 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.