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.
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
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.