Hello everyone,
I have noticed that my assembly work often involves Malm screws loosening, even though I have carefully tightened them. I am very interested in understanding why Malm screws seem particularly prone to loosening on their own, which doesn’t seem logical at first glance.
Are there specific characteristics of the thread type, material properties, or perhaps the influence of vibrations and loads that cause these issues? Does anyone have experience with this or can provide technical reasons why Malm screws tend to loosen repeatedly?
I look forward to your well-informed responses!
I have noticed that my assembly work often involves Malm screws loosening, even though I have carefully tightened them. I am very interested in understanding why Malm screws seem particularly prone to loosening on their own, which doesn’t seem logical at first glance.
Are there specific characteristics of the thread type, material properties, or perhaps the influence of vibrations and loads that cause these issues? Does anyone have experience with this or can provide technical reasons why Malm screws tend to loosen repeatedly?
I look forward to your well-informed responses!
Additional safety measures can indeed achieve a lot.
Yes, for example, spring washers or locking nuts can compensate for tensile forces. In professional applications, however, I recommend using appropriate cavity anchors that reliably handle vibrations (such as those with metal inserts or slot expansion).
Loctite can be problematic in cavities if the adhesive does not cure or does not bond behind the wall. Therefore, I prefer mechanical fastenings.
DiErnest schrieb:
Would the problem be reduced if a kind of clamp or locking screw is used in addition?
Yes, for example, spring washers or locking nuts can compensate for tensile forces. In professional applications, however, I recommend using appropriate cavity anchors that reliably handle vibrations (such as those with metal inserts or slot expansion).
Loctite can be problematic in cavities if the adhesive does not cure or does not bond behind the wall. Therefore, I prefer mechanical fastenings.
This is really great—so much expert knowledge has already been shared here! 🙂
I’ve also often had the problem of confirmat screws loosening. What helps me is to carefully check before installation that the cavity is clean and dry. Then, tighten the screws just enough for the anchor to be fully engaged, without applying too much force.
In addition, I find it very effective to reinforce the material behind the wall, for example by attaching wooden battens or metal furring channels behind the drywall (plasterboard). This way, the confirmat screws hold much more securely!
I’ve also often had the problem of confirmat screws loosening. What helps me is to carefully check before installation that the cavity is clean and dry. Then, tighten the screws just enough for the anchor to be fully engaged, without applying too much force.
In addition, I find it very effective to reinforce the material behind the wall, for example by attaching wooden battens or metal furring channels behind the drywall (plasterboard). This way, the confirmat screws hold much more securely!
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