Lindapter Hollo-Bolt™: Safe and Secure Connections

Lindapter Hollo-Bolt™: Safe and Secure Connections

Lindapter Hollo-Bolt™: Safe and Secure Connections

Last Updated: 21/11/25 at 10:17am

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As New Zealand’s authorised Lindapter distributor, Anzor is proud to supply solutions backed by 90 years of proven engineering excellence. For nearly a century, Lindapter has been trusted worldwide for safe, secure, and innovative structural connections.

Lindapter's Legacy of Innovation

Lindapter pioneered steel clamping in the 1930s with the first Girder Clamps. Today, they remain the global leader, with Hollo-Bolt™ as the original blind bolt for structural hollow sections. Installed from one side only, Hollo-Bolt™ meets NZ Building Code requirements for wind, static, and seismic loads, backed by ICC-ES seismic certification. Engineered for New Zealand’s tough conditions, Lindapter delivers strength, compliance, and proven reliability.

As New Zealand's authorised Lindapter distributor, we're not just suppliers – we're partners in your projects. Ditch the drill and embrace blind bolting. Visit our Lindapter page to explore the full range. Get your free connection design started today – contact our team at 0800 426 967 or email sales@anzor.co.nz.

Why Choose Hollo-Bolt™ for Your NZ Projects?

  1. Faster Installation, Lower Costs: Skip the drilling rigs and welding gear. Hollo-Bolt installs in minutes using a spanner or wrench – no special tools needed.
  2. Unmatched Safety and Compliance: No hot work means fewer permits, reduced fire risks, and safer sites for your team. It adheres to health and safety regulations plus, with CE Mark, TÜV, and full ICC-ES seismic approvals, you get peace of mind that your connections comply with international and local standards.
  3. High-Strength Performance in Harsh Conditions: Built from premium high-tensile steel (with hot-dip galvanised options for corrosion resistance), Hollo-Bolt handles heavy loads.
  4. Versatile and User-Friendly: Adjustable for a wide range of steel thicknesses (6-25mm standard), it's flexible for everything from pipe supports to façades and lifting points. Lindapter has a free connection design service with engineers providing support and specs.
  5. Seismic-Ready for Kiwi Builds: Hollo-Bolt™ stands out as the blind fastener certified for high-seismic regions like New Zealand. With ICC-ES approval for combined seismic loads, it’s the smart choice for structural integrity ensuring your connections stay strong when it matters most.

What is ICC?

ICC stands for the International Code Council, the organization behind the International Building Code (IBC)—a globally recognized set of safety and performance standards for construction.
When a product is ICC-ES approved, it means it has passed rigorous independent testing and evaluation to ensure compliance with these codes, giving engineers, designers, and inspectors confidence in its structural integrity and safety.

Lindapter offers the world’s first structural steel clamping systems approved for use in all Seismic Design Categories (A–F) and fully compliant with the IBC. This is a major advantage for projects in earthquake-prone regions or those requiring strict code compliance. For more information on ICC, click here.

Hollo-Bolt Hexagonal Head Hollo-Bolt Countersunk Head Hollo-Bolt Flush Fit Head
Hollo-Bolt Hexagonal Head Hollo-Bolt Countersunk Head Hollo-Bolt Flush Fit Head


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Image: Queen Bee at Eureka Tower, Melbourne

Case Study: Queen Bee at Eureka Tower

Product used: Hollo-Bolt™

Lindapter's solutions have contributed to iconic projects worldwide, including Australia. This case study shows how Hollo-Bolt™ delivers in high-stakes environments.

Melbourne's Eureka Tower – once the world's tallest residential building at 297 metres – faced a unique challenge: securing attachment of the bee sculptures to the building's steel framework without needing internal access to the hollow sections. Enter Lindapter's Hollo-Bolt™, used extensively by installers to create secure, blind connections.

The result? The use of Hollo-Bolt™ in the Eureka Tower project enabled secure attachment of the bee sculptures to the steel framework, with rapid installation and connections that withstood Australia’s harsh urban winds. This showcases Hollo-Bolt’s strength and reliability in vertical construction while maintaining seismic integrity.

For more case studies, click here to learn more.

Worldwide project successes highlight Lindapter's global trust, and with Anzor's local stock and support, NZ teams can access the same proven products without delays.

Why Use Hollo-Bolt™

Feature

Benefit

Hollo-Bolt™

Other Brands

High Clamping Force Unique mechanism with collapsible rubber washer provides up to three times more clamping force (sizes M16 and M20).
Stronger, Safer Connection Minimal displacement at Safe Working Load due to increased clamping force.
Dynamic Loading Independently tested for dynamic loading applications in accordance with EN-1993-1-9 (fatigue).
Low Temperature Provides high load capacities even in low temperature environments. Carbon steel Hollo-Bolts independently tested down to -45°C (-50°F).
Head Types More head types including the Flush Fit for zero protrusion, plus various architectural finish options.
ICC-ES Approved (all sizes) Hollo-Bolt is available in more sizes than any other expansion bolt with ICC-ES approval for use in Seismic Design Categories A–F.
Fire Rated Carbon steel hex head Hollo-Bolts are independently fire tested in accordance with ISO 834 / ASTM E-119 for 120 minutes F(120).
Accepted Worldwide Recognised globally in design guides by AISC, ASI, BCSA, CIDECT, SAISC, SCI and CE marked for structural use.
Lower Life Cycle Cost Genuine Lindapter products reduce risk and can prevent costly maintenance or replacement associated with copy products.



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