Drywall Screw
Screws · gypsum board screw · bugle head screw
Definition: A drywall screw has a bugle head that countersinks without tearing the paper face and a sharp point that starts fast — the standard fastener for hanging gypsum board.
Anatomy
■ Head■ Shank■ Threads■ Point
Governing standards: ASTM C1002
Common Sizes
| Inch | Metric | Head width | Head height |
|---|---|---|---|
| #6 x 1-1/4 | M3.5 x 32 | bugle | 1/2 in board |
| #6 x 1-5/8 | M3.5 x 41 | bugle | 5/8 in board |
| #8 x 2-1/2 | M4 x 65 | bugle | two layers |
Representative sizes. Full dimensional data lives in the standards listed below.
Grades & Strength
| Grade | Material | Tensile (psi) | Marking |
|---|---|---|---|
| Coarse (Type W) | phosphate-coated steel | — | For wood studs |
| Fine (Type S) | phosphate-coated steel | — | For metal studs |
Materials
- Phosphate-coated steel
- Coated (for humid areas)
Pros & Cons
Pros
- Fast and self-countersinking
- Very cheap in bulk
- Fine or coarse thread for any framing
Cons
- Brittle — snaps under lateral load
- Not for structural wood connections
- Rusts in damp areas unless coated
Typical Uses
- Hanging drywall on wood studs
- Hanging drywall on steel studs
- Interior wall and ceiling board
Alternatives & Related
- Wood Screw — Stronger and less brittle for wood-to-wood joints
- Deck Screw — Corrosion-rated for humid or exterior locations
Where to Buy
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FAQ
Drywall screw vs wood screw?
Drywall screws have a bugle head and phosphate finish and are brittle — they are made for gypsum board, not wood strength. Wood screws have deeper threads and higher toughness.
Coarse vs fine drywall screws?
Coarse (W-type) threads grip wood studs; fine (S-type) threads are for steel studs, where they bite without stripping.