Heavy duty, high strength, tamper resistant, blind steel fastener.

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.

Key features and benefits

• Use on blind sided application
• High tensile and shear strength
• Speed of installation
• Vibration resistance
• High grip capability
• Tamper resistant
• Ideal for areas with restricted access

Assembly materials

• Steel
• Aluminium

Assembly applications

The fastener has been designed for applications in ship building, railway, automotive assembly including car seats, other ground transportation, mining equipment and construction

Specifications

• Sizes: 4.8 mm, 6.4 mm, 8.0 mm, 10 mm, 12.7 mm and 1 6mm (3/16", 1/4'', 1/2", 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*

*Flanged collar only on 3/8'', 1/2" & 5/8'' (three piece) diameters.

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

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 lockbolts 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:

Avdelok^®

High strength, vibration resistant lockbolts with high, controlled clamp.

The Avdel Avdelok lockbolt is a high strength, vibration resistant lockbolt with high, controlled clamp. The Avdelok system offers high shear strength and wide selection of materials, head sizes and collar options giving this rivet an extensive variety of applications.

The Avdelok structural lockbolt is quick to install and easy to inspect for tampering, making this the ideal rivet for heavy engineering applications.

Key features and benefits

• High strength, high speed assembly
• High shear and tensile strength
• Excellent vibration resistance
• Consistent, high performance
• Larger diameter Infalok® lockbolts available from 12.7mm to 28.6mm (1/2" to 1-1/8") with tensile strength of over 300kN for heavy engineering applications
• TIR approved - easy to inspect for tampering
• Robust and rugged installation tools
• Steel Avdelok pins typically offer comparable values to property class 5.8 threaded products.

Assembly materials

Avdelok can be used to fasten:

• Metal to metal

Assembly applications

• Automotive
• Building and construction
• Bridge building
• Cabinets and enclosures
• Commercial vehicle bodies
• Fencing
• Mining
• Railways
• Reefer cool and dry freight containers

Specifications

• Sizes: 4.8mm to 9.6mm (3/16" to 3/8") - for larger diameter lockbolts 12.7mm to 28.6mm (1/2" to 1-1/8")
• Materials: Aluminium alloy, steel and stainless steel
• Headforms: Brazier, countersunk, truss and large head
• Number of grooves on pin*: 6 grooves (4-groove option available for steel Avdelok lockbolts with brazier head 2611 Series - others upon request)
• Collars: Full, half and flanged

Infalok^®

Avdel's new Infalok large diameter lockbolts (ø 12.7 mm - 28.6 mm) are heavy duty, two-piece fasteners designed to provide a high strength and secure assembly. Quick and simple to place they provide a long lasting, vibration proof joint. Infalok lockbolts are the ideal solution where welding, threaded fasteners or solid rivets are not suitable or practical to use.

Capable of delivering a joint clamp (pre-load) of over 225 kN and a tensile strength of over 300 kN, they can be widely used in demanding engineering industries including railways, construction, mining, bridge and crane building.

Due to its improved fastener design and the wider range of sizes and lengths offered, Infalok is now replacing the former range of Avdelok® LD large diameter lockbolts series 2861, 2862, 2863, 2864 and 2865.

Key Features and Benefits

• Exceptional shear and tensile strength provides consistent, high performance required in loadbearing, structural applications
• Excellent vibration resistance
• Quick and easy to install across a wide range of applications
• Grip increments match exactly with international standards
• Tamper resistant
• Tolerates variation in joint - allows angled installation up to 7°
• New range of robust installation tools designed for even extreme conditions
• Ease of use - requires only minimum skill
• Informational head marking for easier identification
• Visual joint control

Installed Infalok fasteners provide a minimum shear, tensile and pre-load strength, which is equivalent to or exceeds ISO898-1 property class 8.8 or ASTM A-325 standards. Made to British Standard B7805: Part 2:1997, the Infalok fastener can be the perfect alternative to conventional property class grade 8.8 threaded fasteners, providing a permanent, high tensile friction grip joint but without the risk of loosening.

Specifications

• Sizes: 1/2" to 1-1/8" (12.7 mm to 28.6 mm)
• Material: Steel
• Headform:
  Round - Infalok 2851 series
  Large truss head - Infalok 2854 series
• Collar: Full, Flanged

Geometric, material and finish specials can be offered, please contact your local Avdel representative.

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

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

Assembly Applications

• Transportation (Heavy Vehicles)
• Railway/rail track
• Steel construction (bridge building/repair, renewable energy)
• Heavy equipment
• Containers

Installation Equipment
For the quick and reliable installation of the Infalok lockbolts Avdel can now offer a new range of durable, state-of-the-art AV™ placing tools and modern, proven Enerpac® pump units.

High strength, vibration resistant lockbolts with multi-grip capability.

The Avdel Maxlok lockbolt is a high strength, vibration resistant lockbolt with multi-grip capability. The wide grip range of the Maxlok lockbolt enables usage in a variety of situations reducing inventory and simplifying stock control. The high shear strength and superior, controlled clamp means the Maxlok lockbolt is ideal for high strength assembly. With quick installation and easy inspection this two-piece rivet is versatile and secure.

Key features and benefits

• Wide grip range to suit a wide variety of applications
• High shear and tensile strength
• High strength, high speed assembly
• Excellent vibration resistance
• Consistent, high performance
• TIR approved - easy to inspect for tampering
• Robust and rugged installation tools
• Reduced fastener inventory and simpler stock control

Assembly materials

Maxlok can be used to fasten:

• Metal to metal

Assembly applications

• Automotive
• Building and construction
• Bridge building
• Cabinets and enclosures
• Commercial vehicle bodies
• Fencing
• Railways
• Reefer cool and dry freight containers

Specifications

• Sizes: 4.8mm and 6.4mm (3/16" and ¼")
• Materials: Aluminium alloy and steel
• Headforms: Brazier, countersunk, mushroom and truss head
• Collar: Flanged

High strength, steel fastener and shell designed for joining composite panels to metal.

With a high shear strength due to the internally locked stem the Avtainer rivet creates a vibration resistant joint whilst the underhead Santoprene™ seal creates a watertight joint.

Key features and benefits

• Prevents cracking and pull through of composite materials
• Ideal for the assembly of GRP vehicle panels
• High shear strength for strong joint integrity
• Underhead Santoprene™ seal
• Internally locked stem provides a secure, vibration resistant joint
• Smaller shell size available for use against metal surfaces
• Low profile head and shell give a neat appearance
• Optional encapsulated heads to match the surrounding panel colour
• Quick to install with nGenesis placing tools
• Easy to inspect for tampering
• TIR approved

Assembly materials

Avtainer can be used to fasten:

• Metal to metal
• Metal to GRP or composites

Assembly applications

• Commercial vehicles
• Container
• Partioning

Specifications

• Sizes: 10.0 mm (3/8")
• Materials: Low Carbon Steel
• Headforms: Brazier head
• Option: Encapsulated heads