According to Lindapter, the Hollo-Bolt Hexagonal Head is an expansion bolt that only requires access from one side of the structural hollow section. They offer a faster alternative to welding or through-bolting, enabling contractors to reduce construction time and labour costs. Installation is carried out by inserting it into pre-drilled steelwork and tightening with a torque wrench.
Additionally, Lindapter’s carbon steel hexagonal head Hollo-Bolts have been independently fire tested under tensile and shear loading with simultaneous exposure to standard fire conditions in accordance with ISO 834/ASTM E-119 for 120 minutes.
