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Type HB Hollo-Bolt

Type HB Hollo-Bolt

The Original Expansion Bolt for Structural Steel with full seismic approval from ICC-ES for all seismic design categories (A through F). Suitable for hollow sections, tubes and where access is available from one side only. For corrosion protection, the Hollo-Bolt® comes with additional JS500 protection as standard or hot dip galvanized.

The Hollo-Bolt (hexagonal head, HDG) is approved by ICC-ES to resist seismic loads and wind loads in all seismic design categories (A to F). Click the following image for more information:

Sizes 5/8" and 3/4" have a patented High Clamping Force (HCF) mechanism to provide three times more clamping force than the same size steel expansion bolt without the mechanism.

For full specification and installation data please click the link below to download the Hollo-Bolt Brochure - The Original Expansion for Structural Steel:

CAD files can be downloaded from the Resources section of the website.


Mild steel, Stainless steel Grade 316


Hot dip galvanized, Bright zinc plated plus JS 500

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Description: Type HB - Hollo-Bolt
  Type: pdf
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Description: Type HB Hollo-Bolt