Formerly Emhart Teknologies & Infastech


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High strength steel breakstem fasteners with excellent bulbing tail formation. Ideal for thin sheet materials.

Avdel Avibulb bulbing rivets offer a high-strength fastening solution ideal for thin sheet metals. The Avibulb' rivets steel breakstem provides excellent bulbing tail formation and high shear and tensile strength. The Avdel Avibulb also has the advantage of good hole fill compensating for irregular, oversized or misaligned holes.

Key features and benefits

  • High shear and tensile strength
  • Good hole fill
  • Provides a large blind side bearing area against the rear sheet
  • Retained stem
  • Ideal for applications requiring elevated temperatures
  • Spreads the tail bearing load/clamp on the rear sheet
  • Ideal for use in thin sheet materials
  • Compensates for irregular, oversized, slotted or misaligned holes
  • Can stop sheet movement in non-standard holes
  • Provides strong, vibration resistant joints
  • No damage, electrical problems or rattling due to loose stems

Assembly applications

  • Automotive
  • Electronics
  • Cabinets and enclosures

Special version:
Earth Tab Rivet Combines a zinc plated and clear passivated steel Avibulb with a brass earthing tab.
>>> View animation


  • Sizes: 3.2mm (1/8") to 6.0mm
  • Material: Steel, zinc & clear passivated
  • Headform: Dome
Avibulb - Series
Material Headform Series
Steel Dome Avibulb BN01


Details can be found in the > Breakstem Systems Catalog available in our Document Library.

Surface finish options
If you are looking for other surface finish options than shown in the above datasheets please download our

> Surface Finishes and Fastener Matrix for Breakstem Systems.

This will show you what surface finish options are possible to apply to our standard fastener types as "customer specials".

Customised Designs
We can design and manufacture breakstem fasteners with a wide variety of forms and finishes to meet your unique assembly requirements. Please refer to this page to find examples of our customised capabilities:

> Breakstem Fasteners & Sealing Plugs - Customised Designs


Installation Equipment
Genesis Range Installation Equipment can be found at the following page

> Breakstem Fasteners Installation Equipment