Structural Rivets

Structural rivets are high-strength blind rivets designed for applications where standard pop rivets are not strong enough. They are commonly used in fabrication, transport, trailers, truck bodies, sheet metal work, marine, agricultural equipment, enclosures, repairs and other industrial assemblies where strong clamp force, vibration resistance and reliable joint performance are required.

Unlike standard open-end blind rivets, structural blind rivets are engineered to create a stronger, more secure joint. Many structural rivets feature retained mandrels, mechanical locking systems, large bearing areas or special bulb formations that help improve shear strength, tensile strength, clamp force and resistance to loosening under vibration.

Huck Aerobolt supplies a wide range of structural rivets in steel, aluminium and 304 stainless steel, including Huck Magna-Lok, Hucklok, Magna-Bulb, Huck BOM, Allok, MonoLok, Bulb-Tite, Tri-Bulb, High Strength Rivets, Huck Auto-Bulb, Huck-Tite, Floortight and Klamp-Tite rivets.

Structural Rivets Require the Correct Rivet Gun

Many structural rivets cannot be installed correctly with a standard hand pop rivet gun or light-duty riveter.

Structural rivets usually require a heavy-duty structural rivet gun, air rivet gun, cordless rivet tool or hydraulic installation tool with the correct nosepiece. These tools are different from standard pop rivet guns because they are designed to handle higher pulling forces, larger mandrels and harder breakstem rivets.

Structural rivet guns typically use:

• Heavy-duty jaws for gripping stronger mandrels
• Higher pulling force for large diameter rivets
• Special nosepieces matched to the rivet type
• Stronger internal components for repeated industrial use
• Better stroke capacity for structural blind rivet setting

Using the wrong tool can cause poor installation, incomplete setting, jaw slippage, damaged mandrels, incorrect stem retention or premature tool wear. For best results, always match the rivet diameter, rivet type and nose assembly to the installation tool.

Some lighter structural-style rivets may be installable with a suitable heavy-duty hand riveter, depending on the size and mandrel type. Larger Huck rivets, BOM rivets and many industrial structural rivets will generally require air, cordless or hydraulic tooling.

Choosing the Correct Structural Rivet

The best structural rivet depends on the material being fastened, the grip range, the strength required, corrosion resistance, sealing requirements and the tooling available.

Key selection factors include:

• Material thickness and grip range
• Rivet diameter
• Parent material type
• Required shear and tensile strength
• Clamp force requirements
• Vibration resistance
• Water resistance or sealing needs
• Corrosion resistance
• Installation tool compatibility

Choosing the correct structural rivet prevents common fastening issues such as loose joints, under-set rivets, pull-through, mandrel loss, water ingress, corrosion mismatch or tool failure.

Common Types of Structural Rivets

Huck Magna-Lok Rivets

Huck Magna-Lok rivets are one of the most common and versatile structural rivets. They are widely used because they offer high shear and tensile strength, good vibration resistance, strong hole-fill performance and a broad grip range.

Magna-Lok rivets are a practical choice for general structural blind fastening across trailers, truck bodies, fabrication, repairs, enclosures and industrial sheet metal work. Their wide grip range can help simplify stock control by reducing the number of grip-specific rivets required across varied material thicknesses.

Magna-Lok rivets also provide excellent sheet take-up and gap-closing performance, making them useful where the joint has minor irregularities, oversized holes, slotted holes or slight misalignment. A visible lock helps make inspection easier after installation, while the rapid body expansion helps fill the hole and produce a secure, repeatable joint.

Magna-Lok rivets are available in steel, aluminium and 304 stainless steel, making them suitable for a wide range of strength and corrosion requirements.

Hucklok Structural Rivets

Hucklok structural rivets are a versatile Huck fastening option designed for high clamp force, strong blind-side strength and consistent joint integrity.

The Hucklok’s wide grip range and double-locking action help secure the assembly from both sides, while its large blind-side footprint helps prevent pull-through. This makes Hucklok rivets especially useful when joining thin, lightweight, pliable or lower-strength materials, including some plastics and composites.

Hucklok rivets are a good option for transport, body building, fabrication and heavy-duty sheet metal assemblies where strong pull-up, vibration resistance and reliable clamp performance are important.

Huck Magna-Bulb Rivets

Huck Magna-Bulb rivets provide very high shear and tensile strength and are designed for heavy-duty applications requiring a wide blind-side bearing area.

During installation, Magna-Bulb rivets form a large blind-side footprint, helping spread load across the rear sheet. This makes them well suited to lower-strength materials, thin sheet applications and joints exposed to vibration or dynamic loads.

Magna-Bulb rivets also feature an internal pin-locking mechanism and a flush pin-break, helping reduce snagging and improve the finished installation. They are commonly selected where stronger joint performance is required than a general-purpose structural rivet can provide.

Huck BOM Rivets

Huck BOM rivets are generally the strongest structural rivets in this range. They are designed for demanding applications requiring very high tensile and shear strength, excellent vibration resistance and lockbolt-level performance.

BOM rivets are commonly used in heavy fabrication, transport, mining, rail, industrial equipment and other severe-duty fastening applications where joint strength is critical.

Because of their strength, high grip capability and larger installation requirements, Huck BOM rivets usually require more powerful tooling than smaller structural rivets. They are also a good option where tamper resistance and long-term joint integrity are important.

Allok Structural Rivets

Allok structural rivets use a special mechanical locking system that helps secure the retained stem inside the rivet body after installation. This improves joint integrity and helps reduce the risk of mandrel movement or loosening under vibration.

The bulbed blind-side upset helps spread clamp force across the rear material, reducing the risk of deformation while leaving a relatively neat blind-side finish with minimal protrusion. Dual locking grooves on the mandrel help improve vibration resistance, stem retention and installed joint strength.

Allok rivets are a strong, reliable structural fastening option for customers wanting good clamp performance, strong mandrel retention, vibration resistance and a secure mechanical lock.

High Strength Rivets

High Strength Rivets are designed for applications where stronger performance is needed than a standard blind rivet can provide. Like Allok rivets, they use a special mechanical locking system to help retain the stem and improve installed joint strength.

They are suitable for demanding industrial, fabrication and repair work where a strong blind-installed fastener is required.

High Strength Rivets are often selected where the application needs better shear strength, tensile strength and vibration resistance than a light-duty blind rivet can offer, but where the installation still needs to be completed from one side of the material.

MonoLok Structural Rivets

MonoLok structural rivets are a strong multi-grip structural blind rivet option, available in steel, aluminium and 304 stainless steel. They are designed to provide reliable clamp performance across varied material thicknesses.

MonoLok rivets are often selected as a practical, cost-effective structural rivet for general fabrication, transport, machinery, repairs and sheet metal assembly.

Their multi-grip design makes them useful where material thickness may vary across the job, helping reduce the need to stock multiple narrow grip ranges.

Tri-Bulb, Bulb-Tite and Klamp-Tite Rivets

Tri-Bulb and Bulb-Tite rivets are structural-style blind rivets designed to form a large blind-side bulb during installation. This helps spread load over a wider area and can make them useful for thinner materials, softer materials or applications where pull-through resistance is important.

These rivets also include a neoprene washer, giving them better sealing performance and improved water resistance compared with many standard structural rivets. They are commonly used in roofing, cladding, trailers, body building, marine, outdoor equipment and applications exposed to weather.

Many Tri-Bulb and Bulb-Tite rivets can be installed with a suitable rivet gun, although a special nosepiece may be required depending on the size. Klamp-Tite rivets use their own specialised nosepiece and should be matched to compatible installation tooling.

Huck-Tite Rivets

Huck-Tite rivets are used in similar applications to Tri-Bulb and Bulb-Tite rivets, but are generally considered a more premium sealing and structural fastening option.

The split-tail formation spreads the blind-side bearing load across the rear sheet, making Huck-Tite rivets useful in thin sheet materials, softer materials and applications where high pull-out resistance is required.

Huck-Tite rivets offer multi-grip capability, strong vibration resistance and a visible lock for easier inspection after installation. An optional under-head washer can also be used where a weather-resistant seal is required.

These rivets are a good choice where the application needs a combination of load spreading, vibration resistance, inspection visibility and improved sealing performance.

Steel, Aluminium or Stainless Steel Structural Rivets?

Structural rivets are available in different materials to suit different strength, weight and corrosion requirements.

Steel structural rivets are usually chosen where high strength and good value are the main priorities. They are common in fabrication, transport, trailers, machinery and general industrial fastening.

Aluminium structural rivets are lighter and provide better corrosion resistance than plain steel in many environments. They are often used in aluminium sheet, marine-style applications, lightweight fabrication, cladding and body building.

304 stainless steel structural rivets offer improved corrosion resistance and are suitable for harsher environments, outdoor use, marine-adjacent applications and stainless assemblies. They usually cost more and often require stronger tooling due to the harder material.

Where possible, match the rivet material to the parent material and application environment to reduce corrosion risk and improve long-term joint reliability.

Quick Selection Guide

For general structural blind fastening, Huck Magna-Lok is often the most versatile starting point.

For stronger clamp force and pull-up, Hucklok is a good option.

For higher strength and a large blind-side footprint, Huck Magna-Bulb is often suitable.

For the highest strength applications, Huck BOM is generally the strongest option, but requires more powerful tooling.

For water resistance or weather-exposed applications, Tri-Bulb, Bulb-Tite and Huck-Tite rivets are commonly used.

For a secure mechanical locking system, Allok and High Strength Rivets are practical options.

For a cost-effective multi-grip structural rivet, MonoLok is often a good choice.

Frequently Asked Questions

Can I install structural rivets with a normal pop rivet gun?

Most structural rivets require a structural rivet gun, air rivet gun, cordless rivet tool or hydraulic rivet tool. Standard pop rivet guns are usually not suitable because structural rivets require higher pulling force, stronger jaws and the correct nosepiece.

Some smaller structural-style rivets may be installed with a suitable heavy-duty hand riveter, but larger Huck rivets, BOM rivets and heavy-duty structural rivets generally require more powerful tooling.

What is the most versatile Huck structural rivet?

Huck Magna-Lok is generally the most common and versatile Huck structural rivet. It suits a wide range of general structural blind fastening applications and is available in steel, aluminium and stainless steel.

Magna-Lok is especially useful where a wide grip range, strong hole fill, fast installation and good vibration resistance are required.

Which structural rivet is the strongest?

Huck BOM rivets are generally the strongest option in this collection. They are designed for heavy-duty applications requiring very high shear and tensile performance, lockbolt-level strength and excellent vibration resistance.

BOM rivets also require more powerful tooling than many smaller structural rivets, so tool compatibility should be checked before ordering.

Which structural rivets are best for water resistance?

Tri-Bulb, Bulb-Tite and Huck-Tite rivets are good options where water resistance is important. Their neoprene or optional sealing washers help create a better seal, making them suitable for outdoor, roofing, cladding, trailer, marine and weather-exposed applications.

What is the difference between structural rivets and standard blind rivets?

Standard blind rivets are suitable for light to medium-duty fastening. Structural rivets are designed for stronger joints, higher clamp loads, better vibration resistance and improved mandrel retention. Many structural rivets have mechanical locks, retained stems or special bulb designs that improve installed performance.

How do I choose the correct grip range?

Grip range is the total material thickness that the rivet is designed to clamp. Measure the combined thickness of all materials being fastened and choose a rivet variant where that thickness falls within the listed grip range. Using the wrong grip range can cause loose joints, poor setting or failed installations.

Do I need a special nosepiece?

Yes, many structural rivets require a specific nosepiece or nose assembly to install correctly. This is especially important for Huck rivets and larger structural rivets. The correct nosepiece helps grip the mandrel properly and ensures the rivet sets as intended.

Which structural rivet should I choose for general use?

For general structural blind fastening, Huck Magna-Lok, Allok, MonoLok and Hucklok rivets are common starting points. Magna-Lok is usually the most versatile Huck option, Hucklok offers strong clamp force, Allok provides a secure mechanical locking system, and MonoLok is a practical multi-grip structural rivet option.

Should I choose steel, aluminium or stainless steel structural rivets?

Choose steel structural rivets where strength and value are the main priorities. Choose aluminium structural rivets where lower weight and corrosion resistance are important. Choose 304 stainless steel structural rivets for harsher environments, outdoor use or stainless assemblies where improved corrosion resistance is required.

What happens if I use the wrong structural rivet?

Using the wrong structural rivet can lead to loose joints, poor clamp force, mandrel loss, water ingress, corrosion problems, rivet spin, pull-through or premature joint failure. If the application is load-bearing, exposed to vibration or used outdoors, rivet selection and installation tooling are especially important.

Technical Advice, Tooling Support & Australia Wide Supply

Huck Aerobolt supplies structural rivets, Huck rivets, heavy-duty blind rivets and compatible installation tooling for trade, industrial, transport, fabrication and maintenance applications across Australia.

If you are unsure which structural rivet to choose, check the material thickness, rivet diameter, required strength, environmental conditions and installation tool before ordering. For help selecting the correct rivet type, grip range, material or structural rivet gun, contact Huck Aerobolt for technical product support.