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OEM Fastening Systems | Special Components & Fastening Systems
Steel, inserts with square body, providing very high torque-to-turn and pull-out performance in all materials.

The Avdel® Squaresert® is a steel threaded insert with a square body, providing very high torque-to-turn and pull-out performance in all materials. The Squaresert® rivet has a large flange to increase the load bearing surface allowing the Squaresert® to be used in thin sheet materials.
Unit of Measure


Thread Size

N/A M5-M8


N/A Steel


N/A Zinc Plated and Clear Trivalent Passivated


N/A Large Flange

Body Shape

N/A Square

Sheet Material Thickness

N/A 0.50 mm0.02 in


N/A Avdel®

Key Features and Benefits

Key Features and Benefits

  • Square section and bore improves torque-to-turn by up to 350% in sheet metal compared to round body inserts
  • Increases punch life compared to hexagonal geometries
  • Superior pull-out performance
  • Can be used for very thin sheet materials from 0.50 mm (0.02")
  • Access needed from only one side of the application, for high speed assembly
  • Provide a female thread in application
  • Can be installed in pre-coated or post painted applications without damaging the surface Clamp two or more sheets
  • Various platings available to increase corrosion resistance
  • Large flange head provides a load bearing surface and reinforces the hole to prevent push-out
  • Can be used as a spacer and can be supplied with an underhead seal
  • Can be used with hand tools, pneumatic tools and fully automated machines to suit a wide range of assembly methods

Assembly Applications

Assembly Applications

  • Automotive body mountings
  • Electrical enclosures
  • Soft sheet metal
  • Plastics & composites
  • Domestic appliances
  • General light fabrication



N/A We can design and manufacture breakstem fasteners with a wide variety of forms and finishes to meet your unique assembly requirements.
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