Welcome

Welcome to our new website which has been carefully developed to assist you finding the solution to your connection requirement.

New features include the Girder Clamp Configurator, Hollo-Bolt Selector and BIM-compatible CAD files. As the website has been completely rebuilt, users of our old website will need to re-register to access these great features. We apologise for any inconvenience and hope you are pleased with the improvements this new website presents.

We value your feedback and please share your comments or suggestions by emailing marketing@lindapter.com

Hollo-Bolt® FAQs

Can the Hollo-Bolt be used in concrete?

Can the Hollo-Bolt be used in all shapes and sizes of HSS?

Is it possible to reuse the Hollo-Bolt?

Why is there a minimum outer ply requirement when using 5⁄8" and 3⁄4" Hollo-Bolts?

Is it necessary to seal the Hollo-Bolt to prevent ingress of water?

How do I remove a Hollo-Bolt?

Can the maximum clamping thicknesses published in the catalogue be exceeded?

Which Hollo-Bolt load table should I use?

Can the Hollo-Bolt be used in concrete?

No. It is designed as an expansion bolt for HSS or other steel sections where access is available from one side only.

Can the Hollo-Bolt be used in all shapes and sizes of HSS?

Yes. It can be used in square, rectangular, circular, and other profiles where access is restricted to the outer face. In all cases the suitability of the component is subject to the available void space, the total thickness of the material to be clamped and in the case of circular sections, the radius of the outer face.

Is it possible to reuse the Hollo-Bolt?

No, although a new Hollo-Bolt can be inserted in the existing hole.

Why is there a minimum outer ply requirement when using 5⁄8" and 3⁄4" Hollo-Bolts?

To ensure the unique collapse mechanism (rubber washer) does not compromise the shear capacity of the Hollo-Bolt by being within the shear plane.

Is it necessary to seal the Hollo-Bolt to prevent ingress of water?

This is not always neccessary especially on the larger size 5/8" and 3/4" Hollo-Bolt HCFs where the collapse mechanism (rubber washer) expands to fill the void. Sealing washers are available; however, it is important the interface between the HSS face and plate or bracket is not ignored.

How do I remove a Hollo-Bolt?

Sizes 5/16", 3/8" and 1/2" using a pneumatic tool to remove the Hollo-Bolt:

1) Set the pneumatic hand tool to reverse mode (anti-clockwise rotation).

2) Place a suitable size wrench (depending on collar size) on the collar flats to hold in place.

3) Use the pneumatic hand tool to loosen the bolt. 

4) Continue in reverse mode until the cone on the inside of the HSS at the other end of the bolt is released to drop inside the HSS.

5) The bolt can now be removed as can the sleeve by prying the collar with a pinch or crow bar.

Sizes 5/8" and 3/4" Hollo-Bolt HCF) using a pneumatic tool to remove the Hollo-Bolt: 

Steps 1) to 3) same as above.

4) Continue in reverse mode until the cone, expanded sleeve, and rubber washer on the inside of the SHS, at the other end of the bolt are released to drop inside the HSS.

5) The bolt and loose collar can now be removed.

Note: Hand tools can be used to untighten the bolt. These methods can also be used to remove the Hollo-Bolt Countersunk Head. The Hollo-Bolt Flush Fit however cannot be removed once it is installed.

Can the maximum clamping thicknesses published in the catalogue be exceeded?

No. The figures are accurate depictions and should not be exceeded under any circumstances.

Which Hollo-Bolt load table should I use?

For simple connections with unfactored loads use the capacity figures shown on page 44 of the Lindapter catalog (5:1 Factor of Safety). The Hollo-Bolt LRFD and ASD Design Strengths figures on page 45 of the Lindapter catalog (taken from ESR- 3330) are to be used only when designing a bolted connection to AISC 360, AISC 341 and AISI S-100 as referenced in Section 2205 of the IBC.

Get in touch with our technical support team

If you have any files that complement your technical request please attach them.

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

    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.

You must have a Lindapter account to access this content