The new Avdel® Avibulb® XT is a high strength breakstem fastener with excellent bulbing tail formation, which makes it ideal for the use in thin sheet materials. Avibulb® XT structural fasteners feature multi-grip capability, especially suited for applications with varying sheet thicknesses. They also have the advantage of good hole fill compensating for irregular, oversized or misaligned holes.
As a multi-grip fastener, the Avibulb® XT rivet has the capability to join component parts having a broad range of thicknesses, thus reducing inventory where a variety of rivet sizes might otherwise be necessary.
During the rivet placing sequence the tail of the rivet body collapses into a bulb shape against the rear sheet. This creates a load bearing surface, which absorbs the force of setting the rivet. Otherwise the setting force, or clamp load, could spread into the application material and might damage the material. This makes Avibulb® ideal for use in thin sheet, soft, brittle and low strength materials, as well as resulting in high resistance to pull-out loads. Also during installation, the portion of the rivet body contained within the application thickness expands outwardly toward the wall of the application hole until the hole is completley filled by the rivet material. This radial expansion results in a strong, vibration resistant joint and compensates for irregular, oversized, slotted or misaligned holes. Also, it can stop sheet movement in applications with non-standard holes
Features
High shear and tensile strength
Multi-grip capability
High residual clamp load
Resists vibration and joint slippage
Good blind side footprint and bulb formation
Spreads the tail bearing load/clamp on the rear sheet
Suitable also in softer materials ( test report )
Reliable stem retention
Under head recess accommodates burrs around holes and spreads the load evenly on the top sheet
Typical Applications
Automotive
Truck and trailer
Heating and ventilation
Domestic appliances
Industrial equipment
Renewable energies
