Known as Ceiling Buttons or Plaster Washers.
Used to hold up sagging ceilings.
Countersunk in the middle for a drywall screw.
Perforated to hold spackle to hide repair.
New! We are now selling 2 versions of Plaster Washers. Shown at top are the standard 1 inch diameter plaster washers. Shown below these are the new improved 1-1/4" Plaster Washers.
The 1-1/4" Plaster Washers are bigger and stiffer to hold more weight per screw. These washers are less likely to pull through old plaster.
Sold in various size packages. See below.