Self-Drilling Drywall Anchor
Anchors · metal drywall anchor · EZ anchor · self-tapping wall anchor
Definition: A self-drilling drywall anchor is a metal anchor with a sharp thread that drives straight into drywall with a drill or screwdriver — no pilot hole needed.
Anatomy
■ Head■ Shank■ Threads■ Point
Governing standards: Manufacturer specified (no universal standard)
Common Sizes
| Inch | Metric | Head width | Head height |
|---|---|---|---|
| for #6 screw | M3.5 | — | 25 lb rating |
| for #8 screw | M4 | — | 40 lb rating |
| for #10 screw | M5 | — | 50 lb rating |
Representative sizes. Full dimensional data lives in the standards listed below.
Grades & Strength
| Grade | Material | Tensile (psi) | Marking |
|---|---|---|---|
| Zinc alloy | zinc | — | None |
| Steel | steel | — | None |
Materials
- Zinc alloy
- Steel
Pros & Cons
Pros
- No pilot hole
- Fast
- Holds more than plastic anchors
Cons
- Fails if driven into a stud
- Limited to drywall and plaster
- One-time use
Typical Uses
- Shelves and brackets
- Curtain rods
- Light fixtures
- Towel bars
Alternatives & Related
- Plastic Anchor — Lighter, cheaper option
- Toggle Bolt — Much higher load in hollow walls
Where to Buy
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FAQ
How much weight does a self-drilling anchor hold?
Typically 25 to 50 lb in 1/2 in drywall, depending on the anchor and screw — check the package rating.
Do I need a pilot hole for a self-drilling anchor?
No — the anchor threads itself in with a drill or screwdriver. That is the point of the self-drilling design.