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Lindapter Hollo-Bolt: Expansion Bolts for HSS Applications

Lindapter Hollo Bolts

We recently had a discussion with a client who was struggling to attach Unistrut materials to 4” x 4” HSS columns.  The contractor didn’t want to use welding to make the connections, so we suggested an innovative product called the Hollo-Bolt. The Lindapter Hollo-Bolt is the original expansion bolt designed for hollow structural section connection applications.  Unlike alternative SHS/HSS connection methods such as welding, through-bolting, or cutting large access holes, you can create a blind connection by inserting a Hollo Bolt into a pre-drilled hole and tightening the expansion bolt with a torque wrench.

Alternative Connection Methods 

The  Lindapter Hollo-Bolt is the only expansion bolt ICC-ES approved for Seismic Design Categories A through F, in compliance with the 2012 International Building Code.  The Hollo-Bolt is also ideal for high wind load applications.  Hollo-Bolt comes in three standard head configurations, including hex head, countersunk, and a flush fit to complement diverse architectural designs.

Lindapter Hollo-Bolt At A Glance

  • Designed for HSS and other structural steel sectionsHighest resistance to tensile loading in accordance with A C437
  • Patented high clamping force design
  • All sizes approved (5/16” to ¾”)
  • Available in Bright Zinc Plated, JS 500, Hot Dip Galvanized, Sherpaplex, and Stainless 316
  • In stock for immediate shipment

Hollo-Bolt Performance Data

Additional Lindapter Hollo-Bolt Technical Information

Lindapter Hollo-Bolt CatalogHollo-Bolt Seismic Technical Data and LoadsLindapter Engineering CatalogIf you searching for HSS expansion bolts that offer exceptional strength, outstanding durability, give the Hollo-Bolt a try.  To learn more, download the Lindapter Hollo-Bolt catalog which is available in PDF format, or contact Unistrut Service Company for pricing and ordering information.