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Repair for moveable articles for use in the house or office.

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Extendable desk tightening screw function broken

Hi,

I have a sitting/standing desk, which should allow me to change the height of the desk. The design of the desk is one pole attached to the legs, which has a thinner pole inside it, which is attached to the flat desk surface. The screw which holds the inside pole attached to the flat desk surface in place seems to have worn down so that it can no longer hold the pole in position (I now have the desk propped up with yoga mats on each side). For a while, I stuffed some card inside the screw and it fixed the issue, but it has now stopped working - instead, the screw just turns endlessly without ever tightening against the inside pole (attached to the flat desk surface). Both screws (one on each side) are now broken.

What is this ‘tightening screw’ piece called and can I replace it myself?

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Could you clarify if the thread on the screw (the part in your hand in the second photo) is stripped, or if the thread inside the large nut that's attached to the pole is stripped? It's it's the screw, then you could probably find a plain replacement screw in a hardware store, which would do the job. However, if the threads in the nut are stripped that's harder to fix. In that case, you would have to drill and tap a slightly larger thread, and get a matching screw. (there is another solution of using a heli-coil, but that's probably more complex yet)

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Judging from the pics, the nut that is welded on that that screw goes into is stripped. If this is the case you'll need a tap and die set. You'll need to tap it to a larger size, and get a screw that fits the new size. Will get you going again.

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