The Tracksure Locking Device comes in a range of sizes from M12 upwards. It is suitable for retro-fitting to existing track and for OEM applications. It can also be tailored for bespoke applications.

  • A modified bolt with end reverse-thread, accommodating both the original nut and Tracksure locking nut.

  • A locking nut is applied onto the reverse thread until it tightens against the original nut.

  • A serrated steel locking cap pushes down over both the original nut and the Tracksure nut, which is held in place with a string clip.

  • If the original nut starts to loosen, even microscopically, the locking nut tightens on the reverse thread with the locking cover combining both actions, ensuring a failsafe bolt fixing.

The device is supplied for Brake Retarder Systems, Breather Switches, Crossings, Tightly Curved Track, Temporary Clamps and Joints, and Fishplates / Insulated Joints. Our product has been extensively tested and approved by many rail infrastructure companies throughout the world, as well as independently tested.





Further details of all testing, trial data and approvals including Junkers tests and Fraunhofer Institute are available by contacting us on +44 (0)1525 840557.

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