Hollo-Bolt® (Hex Head JS500)

Hollo-Bolt expansion bolts require access to only one side of the Structural Hollow Section (SHS), providing a more efficient alternative to welding or through-bolting. This results in reduced construction time and labor costs for contractors. Simply insert the bolt into a pre-drilled section of steelwork and tighten using a torque wrench. Hollo-Bolts also work well for blind connections, where access is only available from one side. The larger M16 and M20 bolts are specifically designed for high strength structural connections and feature a unique High Clamping Force (HCF) mechanism for superior performance. All sizes of Hollo-Bolts, with a hexagonal head made of NEW carbon steel, have been independently fire tested in both tension and shear according to ISO 834. They are fire rated for up to 120 minutes. For more information and load data, please contact Lindapter.