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Lindapter Fire-Resistance Rating of Hollo-Bolts

Product News

Lindapter Fire-Resistance Rating of Hollo-Bolts

Written by: Damian Haigh

10/17/23  |  2 Min read

Lindapter Fire-Resistance Rating of Hollo-Bolts.

Independent fire test data shows that a Hollo-Bolt performs in a similar way to an A325 bolt.

As part of our continued commitment and investment in product development and testing Lindapter commissioned the Building Research Establishment (BRE) to independently fire test Lindapter Hollo-Bolts.

Lindapter commissioned BRE Global Ltd (UKAS 0578) to assess the performance of carbon steel Hexagonal Head Hollo-Bolts in both tension and shear, during 120 minutes of standard fire exposure consistent with ASTM E-119. The results of the independent testing concluded that the Lindapter Hollo-Bolt will continue to perform a given structural function under fire conditions for 120 minutes, F(120). The additional fire-resistance load data is available on request by emailing

  • Independently fire tested in accordance with ASTM E-119
  • Fire-resistance rated for F(120) (120 minutes)

What is Fire-Resistance Rating?
In accordance with the International Building Code, the fire-resistance rating is the duration during which a building element, component, or assembly retains its capacity to carry out a specific structural role, as established through testing or methods derived from tests. See the International Building Code, Sections 202 and 703 for additional information.

Benefits of having fire test data:

  • Additional confidence for specifiers and installers
  • Additional Standards references for building inspectors
  • Offers one of a kind, ASTM E119 tested solution for blind connections

For further details and load data please contact us.

Faster to Install

No drilling or welding!

Independently Approved

Reasons to choose Lindapter

  • Save time and money

    Save time and money

    Clamping two steel sections together avoids time-consuming welding or conventional drilling and bolting.

  • Safer connections

    Safer connections

    Drilling and welding in the field is avoided, removing the need for hot work permits and encouraging safer site conditions.

  • High strength

    High strength

    Lindapter clamps are manufactured from high strength materials to resist high load requirements and harsh environments.

  • Industry leading approvals

    Industry leading approvals

    Lindapter has earned a reputation synonymous with safety and reliability, gaining multiple independent approvals.

  • Adjustable


    Quickly align steel sections by sliding the section into the correct position before tightening the Girder Clamp to complete the installation.

  • Free connection detailing

    Free connection detailing

    Lindapter’s experienced Engineers can detail a custom connection based on your specific requirements free of charge.

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