Toggle Bolt Drill Bit and Hole Size Chart
Use this chart to size the drill bit for any toggle bolt installation. Toggle bolts require a hole that clears the folded toggle, which is wider than the bolt itself — typically 2 to 3 times the bolt diameter. The drill bit must match this folded width, not the bolt diameter, or the toggle will not pass through the hole. This chart covers wing toggles, snap toggles (Toggler SnapToggle), and plastic spring toggles in all common sizes, with the correct drill bit type for drywall, plaster, and hollow block.
In This Chart:
- Installing a 1/4" Toggle? Start Here
- Wing Toggle Drill Bit Sizes
- Snap Toggle (Toggler) Sizes
- Plastic Toggle Sizes
- Drill Bit Type by Base Material
- Drilling Technique
- Why the Hole Is Larger Than the Bolt
- Drill Bit Troubleshooting
- Frequently Asked Questions
Installing a 1/4" Toggle? Start Here.
1/4" (1/4-20) is the most common toggle bolt size for shelving, brackets, TV mounts, and general hollow-wall hardware. You have two good options: the modern snap toggle (metal channel, higher load, works in 1/2" drywall) or the classic spring-wing toggle. Both use a 1/2" drill bit for a 1/4" bolt.
Holds ~265 lbs in 1/2" drywall. Needs only a 1/2" hole. Metal channel and plastic strap set behind the wall without dropping into the cavity. Pair with any 1/4-20 round-head machine screw sized for your fixture.
View & Add to Cart →Prefer a Spring-Wing Toggle?
Classic wing style, zinc plated. Stocked in 1/4-20 and 5/16-18.
You’ll Also Need — the Machine Screw
Snap and wing toggles ship without the bolt. Add a round-head machine screw in the matching thread, long enough to pass through your fixture, the wall, and fully engage the toggle.
Shop Round-Head Machine Screws →Wing Toggle Drill Bit Sizes
Wing toggles (the standard spring-loaded toggle bolt) require the largest holes of the three toggle types because the metal wings fold completely flat against the bolt body during insertion. The hole must accommodate the full folded width. Eugene Fastener stocks spring-wing toggles in 1/4-20 and 5/16-18; the links below go straight to those items.
| Bolt Size | Drill Bit / Hole Size | Folded Toggle Width (approx.) | Hole Multiplier | Shop the Toggle |
|---|---|---|---|---|
| 1/8" | 3/8" | 0.36" | ~3x bolt | See toggles › |
| 3/16" | 1/2" | 0.48" | ~2.7x bolt | 3/16 SnapToggle › |
| 1/4" | 5/8" | 0.60" | ~2.5x bolt | 1/4-20 wing › |
| 5/16" | 3/4" | 0.72" | ~2.4x bolt | 5/16-18 wing › |
| 3/8" | 7/8" | 0.84" | ~2.3x bolt | 3/8 SnapToggle › |
| 1/2" | 1" | 0.95" | ~2x bolt | 1/2 SnapToggle › |
Note: Eugene Fastener stocks the toggle and the machine screw separately. Pair your toggle with a round-head machine screw in the matching thread and a length long enough to pass through your fixture, the wall, and fully engage the wings.
Snap Toggle (Toggler SnapToggle) Drill Bit Sizes
Snap toggles use a smaller hole than wing toggles of the same bolt size. The metal channel passes through edge-on rather than wing-first, so the hole only needs to clear the channel width plus the plastic strap. Toggler publishes specific drill bit sizes for each SnapToggle product code. Every in-stock anchor below links straight to its product page.
| Toggler Code | Thread Size | Drill Bit / Hole Size | Min. Wall | Static Load (1/2" drywall) | Shop the Anchor |
|---|---|---|---|---|---|
| BA | 3/16-24 | 1/2" | 1/8" | 225 lbs | TOG24013 › |
| BB | 1/4-20 | 1/2" | 1/8" | 265 lbs | TOG24014 › |
| BE | 5/16-18 | 5/8" | 1/4" | 310 lbs | TOG21017 › |
| BC | 3/8-16 | 5/8" | 1/4" | 360 lbs | TOG21015 › |
| BD | 1/2-13 | 5/8" | 1/4" | 390 lbs | TOG21016 › |
| BD-SS | 1/2-13 (304 SS) | 5/8" | 1/4" | 390 lbs | TOG21023 › |
Toggler product codes follow Toggler’s standard naming: BA = 3/16-24, BB = 1/4-20, BC = 3/8-16, BD = 1/2-13, BE = 5/16-18. The channel ships without the machine screw — pair it with a round-head machine screw in the matching thread, in a length that suits your wall and fixture. See all toggle anchors ›
Source: Toggler SnapToggle published technical data. Static load values shown for 1/2" standard gypsum drywall. The information presented is for reference; design responsibility for any specific application remains with the installer or specifying engineer.
Plastic Spring Toggle Drill Bit Sizes
Plastic spring toggles are sized similarly to wing toggles — the plastic wings fold flat against the bolt body and require a hole that clears the folded width. Use the same hole sizes as the equivalent wing toggle. Eugene Fastener also stocks the Toggler plastic toggle anchor for thicker (5/8" and 3/4") walls.
| Bolt Size | Drill Bit / Hole Size | Recommended Use | Shop |
|---|---|---|---|
| 1/8" | 3/8" | Light decorative items (under 20 lb) | See toggles › |
| 3/16" | 1/2" | Light brackets, picture frames (under 30 lb) | See toggles › |
| 5/8"–3/4" wall | per Toggler spec | Thick-wall plastic toggle (Toggler) | TOG11011 › |
Drill Bit Type by Base Material
The drill bit MATERIAL must match the wall material. The wrong drill bit type will skate, overheat, dull, or damage the surrounding surface.
| Base Material | Drill Bit Type | Drill Mode | Notes |
|---|---|---|---|
| Drywall (1/2" or 5/8") | Standard HSS twist bit | Drill (rotary) | Low to medium speed. Avoid hammer mode — cracks the gypsum. |
| Plaster & lath | Carbide-tipped masonry bit | Drill (rotary), low speed | Plaster cracks if the bit binds. Use a sharp bit at low RPM. |
| Suspended ceiling tile | Standard HSS twist bit | Drill (rotary), low speed | Tile is soft; oversize the hole only slightly. |
| Hollow concrete block (CMU) | Carbide-tipped masonry bit | Hammer drill | Match bit to block hardness. SDS-plus for harder blocks. |
| Brick (with hollow cavity) | Carbide-tipped masonry bit | Hammer drill | Standard SDS-plus rotary hammer. |
Drilling Technique
A clean hole is critical for toggle bolt performance. A torn or oversized hole reduces clamp force and can let the toggle pull through.
Drywall and Plaster
- Drill at low to medium speed. High RPM melts paper and tears the drywall.
- Apply moderate forward pressure. Let the bit cut, do not force it.
- Pull the bit straight back when the hole is complete — do not rotate or wiggle.
- Vacuum the hole before installing the toggle. Drywall dust on the back face prevents the wings from seating cleanly.
Hollow Block / CMU
- Use hammer drill mode with a carbide-tipped masonry bit. Standard rotary mode will not cut block.
- Drill at lower RPM than you would for solid concrete. Fast spin in hollow block can crack the face shell.
- Blow the hole clean with compressed air or a hand pump before installing.
- Verify the hole is in the hollow center of the block, not in a vertical web. A toggle that lands in a web has nowhere for the wings to open.
Why the Hole Is Larger Than the Bolt
If you have not used toggle bolts before, the size mismatch can look wrong. A 1/4" bolt in a 5/8" hole? Yes — that is correct.
The folded wings of a wing toggle, or the channel of a snap toggle, must pass through the hole intact. Both are wider than the bolt itself. If the hole is sized to the bolt, the toggle will not fit through and the install fails before it starts. Once the toggle clears the hole and springs open behind the wall, the bolt simply hangs in the center of the (now empty) hole — the holding power comes from the wings clamping flat against the back of the wall, not from the bolt threading into anything in the wall.
This is the fundamental difference between a toggle bolt and an expansion-style anchor (lead anchor, plastic conical anchor, screw anchor). Expansion anchors grip the inside of the hole; toggle bolts grip the back face of the wall. The hole is just a passageway.
Drill Bit Troubleshooting
The drill bit skates on the wall surface
Common with smooth glossy paint or over the textured ceiling. Make a small starter dent with a punch or nail before drilling. For glossy surfaces, place a piece of masking tape over the spot and drill through the tape — the tape grips the bit until the cut starts.
The drill bit binds in plaster and cracks the wall
Bit is too dull, or you are drilling too fast. Plaster requires a sharp bit at low RPM. Hammer mode is too aggressive for plaster — use rotary mode only.
The hole is bigger than the chart says
Two causes: (1) you wiggled the bit while cutting, which oval-cuts the hole; (2) the bit is dull and tearing instead of cutting. Result: the toggle may pull through under load. Fix: move to a fresh location, use a sharp bit, drill straight in and pull straight out without rotation.
Drywall dust pushed into the cavity prevents the toggle from setting
Vacuum the hole before installing the toggle. Use a small attachment or compressed air. Dust on the back face of the drywall can keep the wings from sitting flat against the gypsum, reducing clamp force significantly.
Frequently Asked Questions
What size drill bit do I need for a toggle bolt?
The drill bit matches the folded toggle width, not the bolt. As a quick reference: a 1/8" toggle needs a 3/8" hole, a 3/16" toggle needs 1/2", a 1/4" toggle needs 5/8", a 5/16" needs 3/4", a 3/8" needs 7/8", and a 1/2" needs 1". Snap toggles (Toggler) use smaller holes for the same bolt size — 1/2" for 3/16-24 and 1/4-20, and 5/8" for 5/16 through 1/2 threads. See the charts above for the exact size.
Why is the toggle bolt hole so much bigger than the bolt?
Because the folded toggle has to pass through the hole, and it is wider than the bolt. Once the toggle springs open behind the wall, the bolt hangs in the middle of the hole and the wings clamp against the back face of the drywall. The hole is just a passageway — the holding power is entirely from the toggle behind the wall, not from the bolt gripping the hole.
What is the difference between a wing toggle and a snap toggle?
A wing toggle has spring-loaded metal wings that fold flat to pass through the hole, then spring open behind the wall. A snap toggle (Toggler SnapToggle) uses a metal channel on a plastic strap: the channel slides through edge-on, then the strap ratchets it flat behind the wall so it cannot drop into the cavity. Snap toggles use a smaller hole, hold more weight, and are easier to install one-handed. Wing toggles are the lower-cost classic option.
Can I use a toggle bolt in a concrete block or brick?
Yes, in the hollow cavity of a concrete block (CMU) or hollow brick. Drill with a carbide-tipped masonry bit in hammer mode, and make sure the hole lands in the hollow center of the block, not in a solid web, so the toggle has room to open. Toggle bolts are not for solid concrete — for solid concrete use a wedge, sleeve, or screw anchor (see our Concrete Anchor Drill Bit Chart).
How much weight can a toggle bolt hold?
In 1/2" drywall, a Toggler SnapToggle holds roughly 225 lbs (3/16-24) up to 390 lbs (1/2-13) in static load. Actual safe working load is a fraction of that and depends on the wall material, wall thickness, and whether the load is static or in shear. For anything safety-critical or overhead, consult the manufacturer’s published load data and apply an appropriate safety factor.
Do snap toggles and wing toggles come with the screw?
No. Both ship as the toggle only. You add a round-head machine screw in the matching thread (for example, 1/4-20 for a BB snap toggle), long enough to pass through your fixture and the wall and fully engage the toggle. We stock round-head machine screws in the matching threads.
What drill bit do I use for drywall versus plaster versus block?
Drywall: a standard HSS twist bit in rotary mode — never hammer mode, which cracks gypsum. Plaster and lath: a sharp carbide-tipped masonry bit at low RPM, rotary mode. Hollow block or brick: a carbide-tipped masonry bit in hammer-drill mode. Match the bit material to the wall, and match the bit diameter to the hole sizes in the charts above.
Need Toggle Bolts or the Right Drill Bit?
Eugene Fastener stocks toggle bolts in every size on this chart, plus the HSS, carbide-tipped, and SDS-plus drill bits to match. Buy by the piece or save with project-quantity pricing. Same-day will-call in Eugene, fast shipping across the Northwest.
Eugene Fastener & Supply Co. — a family-owned industrial distributor serving the Pacific Northwest since 1969.
Real inventory, real people.
595 Wilson St., Eugene, OR 97402 • Mon–Fri 7:30am–4:00pm • WBE-certified (#7856)
Related Resources
- How to Install Toggle Bolts — complete step-by-step install with weight capacity tables
- Molly Bolt vs Toggle Bolt — choosing between the two main hollow-wall anchor types
- Concrete Anchor Drill Bit & Hole Size Chart — for solid concrete anchors of all types
- Rivet Nut Drill Bit & Hole Size Chart — for blind threaded inserts
- Shop Toggle Bolts
- Shop Drill Bits
- Technical Resource Center