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The Avdel Avbolt® heavy duty fastener is a structural blind fastener with high strength, and tamper resistance. Designed for use in heavy-duty fastening applications such as construction, container, railway, mining and bridge building.


Avbolt fasteners are ideal for areas with restricted access. They offer a fast, positive joint and provide the benefits of single-sided installation with minimal skill required. The Avbolt features a mechanical lock creating a vibration resistant joint and preventing loose stems. The Avbolt system offers ease of inspection for correct installation, excellent tamper resistance and an optimised hardness stem.

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Sizes: 4.8 mm, 6.4mm, 8.0 mm, 10mm and 16mm (3/16", 1/4'', 5/16", 3/8" and 5/8")
Materials Stem: Alloy steel, black oxide
Materials Sleeve and collar: Carbon steel, zinc plated + clear passivated
Collar: Flanged*

Use on blind sided application
High tensile and shear strength
Optimised heat treatment
Speed of installation
Vibration resistance
High grip capability
Tamper resistant
Ideal for areas with restricted access
Easy to remove

Data sheet downloads
Info sheet:

2 Piece Style: Avbolt_21021_mm.pdf
3 Piece Style: Avbolt_21001_mm.pdf

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Genesis nG4