Unscrewable and tamper-proof screws 14 August 2019

While fastening needs are evolving, the safety and the reliability of the assembly systems remain essential. For this reason the teams at LISI AUTOMOTIVE are constantly innovating to propose new solutions to our customers’ needs, whilst ensuring robustness under all possible conditions. The innovative anti-theft and unscrewable LISI T-PROOF® fastener range is designed to fasten and assemble sensitive applications preventing their accidental disassembly.

LISI T-PROOF® are unscrewable and tamper-proof screws and nuts which will keep sensi¬tive applications fastened even in case of a theft attempt. The conical geometry of the LISI T-PROOF screw head or nut does not allow it to be loosened with pliers or any other object. In case of attempted theft, the tool used slides naturally on the ramps of the nut in the direction of loosening.

Designed to fix and assemble sensitive applications to prevent accidental disassembly, this range can be used in many applications and industries, including: Vehicle components (alarm systems, battery packs, seating, etc), public transportation structures (buses, trains, subways, self driving shuttles, etc), and correctional facilities infrastructures.

Ready and easy to use, the tamper-proof LISI T-PROOF system includes a screw and a nut with the same 5-slopes design and is able to optimise and secure assemblies without any corrosion risks and without generating scraps (as opposed to separable screws).

Moreover, the LISI T-PROOF system can ensure the same test load and tightening torque as standard nuts.

“The part assembly is only possible thanks to a tool specifically designed for the LISI T-PROOF system. Our experts have gathered all the LISI know-how in this LISI T-PROOF system to offer a high-quality, solid, reliable and adaptable safety system,” comments LISI.

The LISI T-PROOF range is available in several formats - M6, M8, M10, M12 – in order to satisfy a range of customer needs.

Claire Aldridge Deputy Editor t: +44 (0) 1727 743 889

Having spent a decade in the fastener industry experiencing every facet – from steel mills, fastener manufacturers, wholesalers, distributors, as well as machinery builders and plating + coating companies, Claire has developed an in-depth knowledge of all things fasteners.

Alongside visiting numerous companies, exhibitions and conferences around the world, Claire has also interviewed high profile figures – focusing on key topics impacting the sector and making sure readers stay up to date with the latest developments within the industry.