Why does the bolt spin freely in a hollow wall anchor even though the metal sleeve is stationary?

I’m using Fischer HM 5x37 S metal hollow wall anchors in drywall. I drilled the proper hole, inserted the anchor, and then used the screw it came with. I didn’t use a setting tool — I just drove the bolt in with an electric screwdriver, expecting it to expand the legs behind the drywall. The metal part (the anchor sleeve) stays completely still, but the bolt just spins freely and doesn’t tighten. There’s no resistance or sense that the legs are expanding behind the wall. It’s like the bolt is no longer gripping the inside of the anchor. Is this a sign that the anchor wasn’t properly engaged before I started driving the screw? Or have I stripped the threads inside the anchor? What should I do to fix this, and is there a way to properly install these without a setting tool? I used 4 of these to hang my TV on the wall, and the mounting bracket looks secure. But I am just confused why the screw is freely spinning. I believe it should stop once the legs are retracted completely. https://preview.redd.it/suujfixzf3se1.png?width=2792&format=png&auto=webp&s=9ea78686141083d9bc7e4c07fb7c549d8d74a6f1 submitted by /u/eligloys [link] [comments]

Mar 31, 2025 - 22:43
 0
Why does the bolt spin freely in a hollow wall anchor even though the metal sleeve is stationary?
Why does the bolt spin freely in a hollow wall anchor even though the metal sleeve is stationary?

I’m using Fischer HM 5x37 S metal hollow wall anchors in drywall. I drilled the proper hole, inserted the anchor, and then used the screw it came with. I didn’t use a setting tool — I just drove the bolt in with an electric screwdriver, expecting it to expand the legs behind the drywall.

The metal part (the anchor sleeve) stays completely still, but the bolt just spins freely and doesn’t tighten. There’s no resistance or sense that the legs are expanding behind the wall. It’s like the bolt is no longer gripping the inside of the anchor.

Is this a sign that the anchor wasn’t properly engaged before I started driving the screw? Or have I stripped the threads inside the anchor? What should I do to fix this, and is there a way to properly install these without a setting tool?

I used 4 of these to hang my TV on the wall, and the mounting bracket looks secure. But I am just confused why the screw is freely spinning. I believe it should stop once the legs are retracted completely.

https://preview.redd.it/suujfixzf3se1.png?width=2792&format=png&auto=webp&s=9ea78686141083d9bc7e4c07fb7c549d8d74a6f1

submitted by /u/eligloys
[link] [comments]