A screw hole goes loose when the threads in the material are stripped or crushed. You can often restore the grip by giving the screw new material to bite into, or by moving to a larger fixing. The best method depends on whether the hole is in wood, drywall or metal.
Wood: Glue and Filler Methods
Wood is the easiest material to repair. Try these methods in order of effort.
- Matchstick fix. Dip several wooden matchsticks or thin splints in wood glue, push them into the hole until it is full, and snap them off flush. Let the glue set as its maker states, then drive the screw again.
- Dowel plug. For a larger hole, drill it out to the size of a dowel, glue in a short length of dowel, trim flush and drill a new pilot hole.
- Wood filler. Pack in two-part wood filler or a glue and sawdust mix, and drive the screw once it has hardened. Some people use filler made for the job and screw in before it fully hardens, following the maker’s directions.
- Longer or thicker screw. If the part allows, a slightly longer or wider screw can reach fresh wood.
Drywall
Screws in plain drywall hold poorly. Replace them with a drywall anchor sized for the load, such as a plastic expansion type or a toggle bolt, following its maker’s weight guidance. For anything heavy, find a stud or solid backing. If the wall must carry significant weight, consult a qualified professional.
Metal and Plastic
Stripped threads in metal can be fixed with a larger tap and bolt, a thread insert kit or a nut and bolt through the part. In plastic, a slightly larger self-tapping screw or a threaded insert may work. Follow the insert maker’s drill and tap sizes, and take care with any part that relates to safety or structure.
Matching the Fix to the Material
| Material | Light-duty fix | Stronger fix |
|---|---|---|
| Wood | Glued splints | Dowel plug and new pilot hole |
| Drywall | Plastic anchor | Toggle bolt or fix to stud |
| Metal | Larger screw | Thread insert kit |
| Plastic | Larger screw | Threaded insert |
Tips to Prevent a Repeat
- Drill a pilot hole of the right size for the screw.
- Use a driver that fits the screw head, and stop when snug.
- Do not overtighten, especially in softwood and particleboard.
- For hinges and hardware that see constant movement, consider longer screws into solid framing.
FAQ
Can I just use a bigger screw?
Sometimes, but the head may no longer fit the hardware, and the hole may split. Check first, and drill a pilot hole.
Does the glue need time to dry?
Yes. Follow the glue maker’s setting time before driving the screw back in.
The Short Version
Give the screw new material to hold: glued splints or a dowel in wood, a proper anchor in drywall, and an insert in metal or plastic. Allow glue to set, drill a pilot hole and ask a professional where the fixing carries a structural load.