Drywall Anchor Size Chart: The Complete Guide for Homeowners

Hanging shelves, TVs, or heavy mirrors? If you’re not hitting a stud, you need the right anchor. But with so many options, how do you know which drywall screw diameter to choose? That’s where a drywall anchor size chart comes in. Using the wrong size means sagging shelves—or worse, holes ripped in your wall.

Here’s a straightforward guide, complete with a big reference chart, to help you pick the right anchor every time. 🛠️

Why drywall screw diameter matters

Drywall isn’t designed to hold weight on its own. Anchors spread the load, gripping the wall so screws don’t just pull out. Choosing the wrong size can either:

• Fail to support the load (too small).

• Destroy the wall with overkill hardware (too big).

Using a drywall anchor size chart ensures you match the anchor strength to your project—no guesswork, no costly mistakes.

A variety of wood screws in different sizes and lengths

Drywall Anchor Size Chart

Below is a detailed chart showing common anchor types, sizes, weight capacities, and typical uses.

Anchor Type	Common Sizes	Weight Capacity (Drywall)	Best For	Notes
Plastic expansion anchors	#6 – #10 screws	10–25 lbs	Light frames, small décor	Cheap and easy; best in 3/8"-1/2" drywall.
Self-drilling (threaded) anchors	Small, medium, large	25–75 lbs	Shelves, towel racks, small cabinets	Install directly into drywall; avoid overtightening.
Molly bolts (hollow wall anchors)	1/8", 3/16", 1/4"	25–50 lbs (per anchor)	Mirrors, medium shelves	Expand behind drywall for strong hold; reusable.
Toggle bolts (butterfly anchors)	1/8"–1/2" bolt size	70–200 lbs	TVs, large cabinets, heavy shelving	Excellent strength; requires larger drill hole.
Strap toggles	3/16", 1/4", 3/8"	100–250 lbs	Appliances, garage storage	Easier install than classic toggle; strong in drywall and hollow block.
Metal self-drilling anchors	Medium, large	50–100 lbs	Curtain rods, shelves, fixtures	Stronger than plastic threaded anchors; still easy DIY install.

According to The Family Handyman, toggle bolts remain the strongest option for heavy-duty drywall installs, while plastic expansion anchors are fine for lightweight décor.

How to use the drywall anchor size chart

1. Know your load – Always weigh or estimate what you’re hanging.

2. Pick the right anchor class – Small décor vs. TVs require very different hardware.

3. Match size to drywall thickness – Most modern drywall is 1/2", but some basements or ceilings use 3/8" or 5/8".

4. Don’t forget screws – Anchor strength depends on using the proper screw size.

The U.S. Consumer Product Safety Commission highlights that overloaded wall fixtures are a common cause of household accidents (CPSC Safety Tips).

A toolbox filled with an assortment of screws and tools for DIY projects

Cleaning and reusing drywall anchors

Most anchors are not reusable once removed, especially toggle bolts and expansion anchors. If you’re curious about maintenance, here’s how to keep things clean:

• Wipe dust off threaded anchors before reuse.

• Inspect metal anchors for bending or wear.

• Patch and spackle any oversized holes before reinstalling new anchors.

A good rule: if the anchor looks stressed or distorted, replace it. Anchors are cheap; repairs aren’t.

A selection of screws showcasing various head styles and sizes

FAQ

What is the most common drywall screw diameter?

Plastic expansion anchors for small screws (#6–#10) are the most common for light-duty projects.

How much weight can drywall anchors hold?

Anywhere from 10 lbs (small plastic) to 200+ lbs (toggle bolts), depending on type and size.

Can I use drywall anchors in ceilings?

Yes, but only heavy-duty toggle or strap toggles—and never for loads beyond rated capacity.

How do I know which anchor to use?

Check a drywall anchor size chart and match anchor strength to the item’s weight.

Are drywall anchors reusable?

Plastic ones generally aren’t; some threaded or metal anchors can be reused if undamaged.

What size screws for 5/8 drywall?

Use 1 ¼-inch screws for single-layer 5/8" drywall on wood studs; go up to 1 ⅝-inch if attaching to metal studs or ceilings for extra hold.

Final verdict: drywall anchor size chart

Using a drywall anchor size chart removes the guesswork from hanging anything on drywall.

From lightweight picture frames to flat-screen TVs, there’s an anchor made for the job. Match the anchor type, size, and weight rating to your project, and you’ll get strong, safe, and long-lasting results. 📌