Drywall Screw Size Chart: Complete Guide to Types, Lengths & Installation (2026)

Drywall screws look simple but there are four types and getting the wrong one means loose panels, popped fasteners, or screws that spin without gripping. Here is the complete guide.

Drywall Screw Size Chart

W-Type vs S-Type: The Critical Difference

W-type (coarse thread) — for wood studs. The coarse thread bites aggressively into wood fiber and self-countersinks into the gypsum paper face without tearing it. This is the standard drywall screw for 99% of residential work.

S-type (fine thread / self-drilling) — for metal studs. The sharp drill-point tip penetrates light-gauge steel without a pilot hole. Fine thread grips metal better than coarse thread. Using a W-type in metal studs results in poor holding strength.

How Deep to Drive Drywall Screws

Drive the screw just below the paper surface — creating a slight dimple — without tearing the paper. The paper face is structural. A torn paper face means the screw has no holding power and will pop. Use a drywall dimpler bit or set your drill clutch carefully.

• Too shallow (proud): joint compound won't cover it, visible bump after painting
• Just right (dimple): paper intact, compound fills cleanly
• Too deep (torn paper): screw has minimal holding strength, will pop

Common Mistakes

• Using drywall screws for structural work: Drywall screws are hardened and brittle — they snap under shear load. Never use them for framing, decking, or any structural connection.
• Wrong length: Screw must penetrate at least 5/8" into the stud. For 1/2" drywall that means minimum 1-1/8" screw — 1-5/8" is standard for margin.
• Using W-type in metal studs: Coarse thread strips metal stud immediately. Always use S-type for metal framing.

Where to Buy Drywall Screws

Canada:

United States:

As an Amazon Associate, BuildToolHQ earns from qualifying purchases.

Frequently Asked Questions

What size drywall screws do I need for 1/2 inch drywall?

Use 1-5/8 inch coarse-thread W-type drywall screws for 1/2 inch drywall on wood studs. This provides 5/8 inch minimum penetration into the stud. For 5/8 inch type X drywall use 1-7/8 to 2 inch screws. For double-layer applications use 2-1/4 to 2-1/2 inch screws.

What is the difference between W-type and S-type drywall screws?

W-type screws have coarse threads designed to grip wood fiber - use for drywall to wood studs. S-type screws have fine threads and a self-drilling point designed to penetrate metal studs - use for drywall to metal framing. Using W-type coarse thread in metal studs results in poor holding strength.

How deep should drywall screws be driven?

Drive screws just below the paper face surface creating a slight dimple without tearing the paper. The paper face is structural - a torn paper face means the screw has minimal holding strength and will pop. Set your drill clutch to achieve consistent depth.

Can I use drywall screws for wood framing?

No. Drywall screws are hardened and brittle - they snap under shear load and are not rated for structural connections. Never use drywall screws for framing, ledger boards, joist hangers, or any load-bearing application. Use structural screws or nails for all framing work.

How far apart should drywall screws be?

On walls space screws 16 inches on center along studs. On ceilings space screws 12 inches on center along joists. Always screw within 3/8 inch of panel edges. Never place screws closer than 3/8 inch from any edge.

Related Guides

• Deck Screws Complete Guide — Outdoor screw selection
• Screw Coating Guide — Which coating for outdoor use
• Structural Screws vs Lag Bolts — For framing connections
• Screw Size Selector — Get your exact screw spec instantly
• Types of Drywall Anchors — When a screw alone isn’t enough

Related chart: Pilot Hole Size Chart for Every Screw Gauge