Avdel Specialist Blind Fasteners

Multi-grip performance and consistent, high-performance assembly with the Avdel fastening system.

Clarendon Specialty Fasteners are an approved distributor of Stanley Engineered Fastening and can offer technical support alongside Stanley.

Avdel® Avex® and Stavex®

  • Multi-grip capability accommodates wide variations in material thickness – inventory reduction
  • Sizes – 3.0 – 6.4mm (1/8” – 1/4”)
  • Materials – Aluminum or Steel
  • Spreads the tail bearing load/clamp load on the rear sheet making it ideal for use in thin sheet materials
  • Compensates for irregular, oversized, slotted or misaligned holes

Contact us for more information:

Key Benefits:

  • Non-structural breakstem rivet.
  • Retained stem.
  • Blind hole, one-sided installation capability.
  • Multi-grip capability.
  • Good hole fill.
  • Provides a large blind side bearing area against the rear sheet.
  • Wide choice of installation tools.
  • One fastener can be used to replace several standard grip fasteners.
  • Accommodates wide variations in material thickness.
  • Reduced fastener inventory and simpler stock control.
  • 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.
  • Breakstem fasteners can be customized to meet unique assembly requirements.


  • Sizes: 3.0mm to 6.4mm (1/4")
  • Materials: Aluminum alloy with steel or stainless steel stems
  • Headforms: Dome, countersunk and large flange
Aluminum Alloy Body &
Steel Mandrel
120° Countersunk
Large Flange
Avex 1661
Avex 1604
Avex 1641
Aluminum Alloy Body &
Stainless Steel Mandrel
Large Flange
Avex 1663
Avex 1643