All variants of the Tesa adhesive screw appear to have an M3 thread (3mm diameter) with a 12mm long screw.

Hello Primus Part of the question was already answered 11 months ago. When I remeasure, I also come up with the M3*13 as Maude Compte wrote. I also do not understand other specifications such as 6000 cm (just imagine that) or 2.5 kg per screw, if it is supposed to hold 2x 10 kg. I haven't found any more information than that online: https://www.tesa.com/de-ch/buero-und-zuhause/tesa-rechteckige-klebeschraube-fuer-mauerwerk-und-stein-10kg.html Generally important is - Allow to dry for at least 24 hours according to the instructions - Follow the instructions regarding health Good luck with it!

Should work well, I think they hold even better on tiles than on stone

I also attached it to a plastered wall. It holds well and could be removed again, but the wall didn't look perfect afterwards.

Depending on the supplier : The screw has the following dimension: Diameter: 3mm Length: 13mm

This is a rectangular adhesive screw for walls.

Yes. Surfaces suitable for the rectangular adhesive screw: concrete, stone, wood, tiles, plastic, glass and metal. Up to max. 10 kg.

The adhesive screws are 60mm long, which will probably be rather tight.

Unfortunately, the adhesive is not available individually.