Hanging heavy objects (kitchen items, shelving, bathroom and medicine cabinet, etc.) must be faultless, your safety depends on it. The blocking must be perfect, and if the screw or the dowel turns in the vacuum at the end of tightening, the fixing must be started again.
Choosing an ankle
Whether it is made of metal, plastic or Nylon, the anchor undergoes expansion under the effect of the tightening of the screw (generally a wood screw), which gives great resistance to fixing. The range presented in the specialized departments is very vast: take the trouble to read the indications given by the manufacturer on the nature of the support (full, friable or hollow) and the type of load. When in doubt, use a versatile dowel.
For solid materials
Anchors with external thread: they are particularly suitable for porous materials with a tendency to crumble, for aerated concrete or plaster tiles, as in materials of the same type. There are also plugs with external thread, Nylon and metal for plasterboard (light loads).