Should I Put Drywall Anchors Into Plaster Walls?

Toggle Bolts

• Toggle bolts have a hinged metal assembly that is spring-loaded to unfold within the wall. To install a toggle bolt, drill a hole in the plaster or drywall. The hole must be big enough to accommodate the folded metal assembly. Insert the toggle bolt, and the hinged assembly will open like wings within the wall. Turning the screw draws the unfolded wings closer, creating a tight grip. The stability of a toggle bolt depends on the assembly within the wall, so it will work on both plaster and drywall walls, which typically are hollow.

Hollow-Wall Anchors

• Hollow-wall anchors function in a similar way. To install a hollow-wall fastener, drill a hole and insert it as you would a toggle bolt. The plastic cover that extends over the threads opens outward as you turn the screw, making the interior portion of the anchor too big to exit the hole.

Unsuitable Anchors

• Thick-threaded plastic wall anchors dig deep into the material of the wall. This type of anchor works well on drywall, which has a soft, chalky consistency. But plaster is much harder, so thick-threaded plaster anchors might not penetrate well. Metal versions of this anchor might perform better, but the threads on this model might weaken the plaster, causing cracking.

Considerations

• If you’re not sure whether a particular anchor is appropriate, call the manufacturer. Ask what types of materials the anchor is suited to grip. If you can’t contact the manufacturer, don’t take any chances. Discard the anchor and buy a model specifically designed for plaster walls.