MULTIGRIP LOCKBOLTS
Multigrip lockbolts are high-strength fastening systems designed to create secure, vibration-resistant joints across a wider range of material thicknesses than standard lockbolts. Their extended grip range allows a single fastener size to accommodate multiple material thicknesses, helping simplify fastener selection and reduce the number of sizes required for inventory.
Installed using a compatible lockbolt tool and nose assembly, multigrip lockbolts provide a permanent mechanical fastening solution suitable for demanding applications where strength, reliability and consistent installation are essential. They are commonly used in truck and trailer manufacturing, transport equipment, heavy machinery, agricultural equipment, metal fabrication and industrial assembly.
Top Fasteners supplies multigrip lockbolts for Australian manufacturers, fabricators and maintenance professionals, offering fastening solutions designed for reliable performance in challenging operating environments. For assistance selecting the right multigrip lockbolt system and compatible tooling, Contact Top Fasteners.
Our Multigrip Lockbolt Range
What Are Multigrip Lockbolts?
Multigrip lockbolts are two-piece mechanical fasteners consisting of a grooved pin and a matching collar. During installation, a compatible lockbolt tool pulls the pin while swaging the collar into the locking grooves, creating a permanent mechanical joint.
Unlike conventional lockbolts, multigrip lockbolts are designed with an extended grip range. This allows one fastener size to accommodate a broader range of material thicknesses, reducing the need to stock multiple fastener sizes while providing installation flexibility.
Once installed, the collar is permanently swaged onto the pin, creating a secure connection that resists loosening under vibration and dynamic loading. Because the installation process does not rely on tightening torque like traditional nuts and bolts, multigrip lockbolts help deliver consistent clamp force across multiple installations.
Key Features and Benefits of Multigrip Lockbolts
Wide Grip Range
A single multigrip lockbolt can accommodate a wider range of material thicknesses than a standard lockbolt, helping reduce inventory requirements and simplify fastener selection.
High Clamp Force
The installation process creates a consistent clamping force that helps maintain joint integrity throughout the service life of the assembly.
Excellent Vibration Resistance
Because the collar is permanently swaged onto the locking grooves of the pin, multigrip lockbolts are designed to resist loosening in applications exposed to continuous vibration or repeated movement.
High Strength
Multigrip lockbolts are suitable for applications requiring strong mechanical fastening where reliability is critical.
Permanent Mechanical Fastening
Once installed, the fastener forms a permanent connection that does not require periodic re-tightening.
Faster Installation
Using a compatible lockbolt installation tool allows multigrip lockbolts to be installed quickly and consistently in production and maintenance environments.
Reduced Inventory
The wider grip range means fewer fastener sizes may be required compared with standard lockbolt systems, helping simplify inventory management.
Consistent Installation
When installed with compatible tooling, multigrip lockbolts provide repeatable installation quality across production runs.
Common Applications for Multigrip Lockbolts
Truck and Trailer Manufacturing
Used for chassis components, body assemblies, cross members, structural frames and commercial vehicle construction.
Transport Equipment
Suitable for buses, commercial vehicles, freight equipment and transport infrastructure requiring durable mechanical fastening.
Heavy Machinery
Used in equipment exposed to high vibration, repeated loading and demanding operating conditions.
Agricultural Equipment
Suitable for tractors, harvesters, trailers and other agricultural machinery where reliable fastening is essential.
Construction Equipment
Used in selected construction machinery and fabricated structural components.
Metal Fabrication
Provides a high-strength fastening solution for fabricated steel assemblies, heavy brackets and industrial components.
Mining Equipment
Suitable for selected mining machinery and support equipment operating in harsh environments.
Industrial Manufacturing
Used in manufacturing facilities where repeatable, high-strength fastening improves production efficiency.
General Multigrip Lockbolt Specifications
Multigrip lockbolts are available in different sizes and configurations depending on the selected product.
| Specification | General Information |
|---|---|
| Fastener Type | Two-piece lockbolt system |
| Components | Grooved pin and matching collar |
| Installation Method | Installed using a compatible lockbolt tool and nose assembly |
| Grip Range | Extended grip range compared with standard lockbolts |
| Installation Access | Requires access to both sides of the assembly |
| Fastening Type | Permanent mechanical fastening |
| Applications | Transport, heavy equipment, fabrication and industrial assembly |
Refer to the product technical data sheet for available diameters, grip ranges, materials and dimensions.
How to Choose the Right Multigrip Lockbolt
Selecting the correct multigrip lockbolt helps achieve reliable installation and long-term fastening performance.
Consider the following factors before selecting a product.
Material Thickness
Determine the total thickness of the materials being joined. Select a multigrip lockbolt with a suitable grip range for the application.
Fastener Diameter
Choose a diameter appropriate for the required joint strength and the hole size specified for the application.
Material Compatibility
Select a fastener material suitable for the operating environment, corrosion requirements and parent material.
Head Style
Choose the appropriate head style according to the application, appearance requirements and installation design.
Operating Environment
Consider exposure to moisture, chemicals, vibration, temperature and other environmental conditions when selecting the fastener.
Installation Tool Compatibility
Confirm that a compatible lockbolt tool and matching nose assembly are available for the selected multigrip lockbolt.
If you are unsure which product is best suited to your application, Contact Top Fasteners for technical assistance.
How to Install Multigrip Lockbolts
Multigrip lockbolts are installed using a compatible lockbolt installation tool and matching nose assembly. Correct installation helps ensure consistent clamp force and reliable fastening performance.
The general installation process includes:
1. Prepare the Materials
Ensure the components are correctly aligned and drill or prepare the hole according to the specifications for the selected multigrip lockbolt.
2. Insert the Lockbolt Pin
Insert the lockbolt pin through the aligned materials until the head sits flush against the workpiece.
3. Position the Collar
Place the matching collar over the grooved end of the pin.
4. Install Using a Compatible Lockbolt Tool
Fit the correct nose assembly to the installation tool and engage the lockbolt pin. As the tool operates, it pulls the pin while swaging the collar into the locking grooves.
5. Complete the Installation
Once the required clamp force is achieved, the pintail breaks away at its designed break point, completing the installation.
6. Inspect the Joint
Check that the collar has been correctly swaged and that the fastener has been installed according to the manufacturer's recommendations.
Always use compatible lockbolt tools, nose assemblies and collars designed for the selected multigrip lockbolt system.
Multigrip Lockbolts vs Standard Lockbolts
While both fastening systems provide high-strength mechanical joints, multigrip lockbolts are designed to accommodate a wider range of material thicknesses.
| Feature | Multigrip Lockbolts | Standard Lockbolts |
|---|---|---|
| Grip Range | Wider grip range | Standard grip range |
| Inventory Requirements | Fewer fastener sizes may be required | More sizes may be required |
| Clamp Force | High | High |
| Vibration Resistance | Excellent | Excellent |
| Installation | Compatible lockbolt tool and nose assembly | Compatible lockbolt tool and nose assembly |
| Joint Performance | Permanent mechanical fastening | Permanent mechanical fastening |
| Typical Applications | Variable material thicknesses | Fixed material thicknesses |
If your application involves varying material thicknesses, multigrip lockbolts may help reduce inventory while maintaining consistent fastening performance.
Related Lockbolt Products
Top Fasteners supplies a complete range of lockbolt fastening systems and installation equipment.
Explore our related products:
- Lockbolt Tools – Installation tools designed for compatible lockbolt systems.
- Nose Assemblies – Compatible tooling for installing lockbolt pins and collars.
- TF Lockbolts – High-strength lockbolt systems for demanding industrial applications.
- Structural Blind Rivets – High-strength blind fastening solutions for structural applications.
- Blind Rivets – Permanent fastening solutions for sheet metal and general fabrication.
Frequently Asked Questions About Multigrip Lockbolts
What are multigrip lockbolts?
Multigrip lockbolts are two-piece fastening systems consisting of a grooved pin and matching collar. They are designed to provide a secure mechanical joint while accommodating a wider range of material thicknesses than standard lockbolts.
What is the advantage of a multigrip lockbolt?
The main advantage is the extended grip range, allowing one fastener size to suit multiple material thicknesses. This can simplify inventory management while maintaining reliable fastening performance.
Are multigrip lockbolts suitable for high-vibration applications?
Yes. Once installed, the collar is permanently swaged onto the pin, helping create a joint that resists loosening under vibration and dynamic loading.
What industries use multigrip lockbolts?
They are commonly used in truck and trailer manufacturing, transport equipment, agricultural machinery, heavy equipment, metal fabrication, mining and industrial manufacturing.
Do multigrip lockbolts require a special installation tool?
Yes. They must be installed using a compatible lockbolt installation tool fitted with the correct nose assembly.
Can multigrip lockbolts be removed?
Multigrip lockbolts are permanent fasteners. If removal is required, the installed fastener typically needs to be mechanically removed and replaced with a new one.
How do I choose the correct multigrip lockbolt?
Consider the total material thickness, required grip range, fastener diameter, material compatibility, operating environment and installation tool compatibility.
What is the difference between multigrip lockbolts and standard lockbolts?
Both provide high-strength mechanical fastening, but multigrip lockbolts offer a wider grip range, allowing a single fastener size to accommodate a broader range of material thicknesses.
Can Top Fasteners help me select the right multigrip lockbolt?
Yes. Our team can assist you in selecting a suitable multigrip lockbolt based on your application, material thickness, operating environment and installation requirements. Contact Top Fasteners for expert advice and product recommendations.
Why Choose Top Fasteners?
Top Fasteners supplies high-quality fastening solutions for transport, manufacturing, construction and industrial applications across Australia.
Our experienced team can help you select the right multigrip lockbolt, compatible lockbolt installation tool and nose assembly for your project. We also provide technical support to help ensure you choose the most suitable fastening solution for your application.
Whether you're working on truck and trailer manufacturing, heavy equipment, metal fabrication or industrial maintenance, we can assist with dependable fastening products backed by industry knowledge. Contact Top Fasteners to discuss your project requirements.
Need Help Choosing the Right Multigrip Lockbolt?
If you're unsure which multigrip lockbolt is best suited to your application, our team is here to help.
Contact Top Fasteners for product recommendations, technical information and assistance selecting compatible lockbolt tools and nose assemblies.