What screws do I use for drywall?
Use coarse-thread drywall screws for wood studs and fine-thread drywall screws for metal studs. For ½″ drywall into wood, the standard choice is a #6 × 1-¼″ coarse-thread screw.
Coarse thread vs fine thread
The two main drywall screw types are identified by thread pitch:
- Coarse thread (W-type) — wide threads bite into wood fibers. Use for wood studs and wood blocking.
- Fine thread (S-type) — tight threads cut into metal without splitting it. Use for steel stud framing.
Using coarse-thread screws in metal studs is awkward — the threads strip without gaining purchase. Fine-thread in wood works but backs out over time.
Length selection
| Drywall thickness | Substrate | Screw length |
|---|---|---|
| ½″ | Wood stud | 1-¼″ |
| ½″ | Metal stud | 1-¼″ |
| ⅝″ | Wood stud | 1-⅝″ |
| ⅝″ | Metal stud | 1-⅝″ |
| Double layer ½″ | Wood stud | 2-¼″ |
The screw must penetrate at least ⅝″ into wood studs for a secure hold. Screws driven too deep or angled will "dimple" through the paper face and lose holding power.
The bugle head
Drywall screws have a bugle-shaped head that seats flush with the paper surface without tearing it. This recess is then filled with joint compound. Do not substitute wood screws, which have a flat or round head and will stand proud of the surface.
How many screws per sheet
Code generally requires screws every 12″ on interior studs and 16″ on ceiling joists. Edge screws should be at least 3/8″ from the drywall edge to prevent crumbling.