What size drill bit for a sleeve anchor?
Pick your sleeve anchor size and get the drill bit — it's the same diameter as the anchor (1:1). A 3/8" sleeve anchor takes a 3/8" bit.
Sleeve anchor size
Common sleeve anchor sizes — ¼" through ¾" (incl. 5/16").
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How sleeve anchor sizing works
Sleeve anchors follow the 1:1 rule: the drill bit is the same diameter as the anchor. A ⅜" sleeve anchor needs a ⅜" carbide bit. The anchor is a bolt wrapped in a metal sleeve; as you tighten the nut, the sleeve is drawn up and compresses outward along its whole length against the hole, so the hole is drilled to the anchor’s exact diameter — the sleeve does the expanding, not the hole.
Because the force spreads along the sleeve rather than wedging at a single point, a sleeve anchor is gentler on the base material — which is why it holds where a wedge anchor would split the wall. Drill deeper than the embedment and clear the dust before setting.
Works in almost any masonry — even brick and mortar
The sleeve anchor is the most forgiving masonry anchor: it holds in solid concrete, brick, concrete block, and even mortar joints. Because the sleeve compresses along its length instead of wedging at a single point, it puts far less splitting stress on the material — so it’s the anchor to choose when you’re into brick or block and a wedge anchor would crack them. (For a concrete screw, see the Tapcon.) You still need a hammer drill and a carbide-tipped bit — masonry is a different tool class than wood. For heavy, structural or code-governed work, follow the manufacturer’s published data and local code.
Common questions
What size drill bit for a sleeve anchor?
The same diameter as the anchor — sleeve anchors follow the 1:1 rule. A 3/8" sleeve anchor takes a 3/8" carbide bit, a 1/2" anchor a 1/2" bit, and so on. The hole is drilled to the anchor's exact size because the sleeve itself compresses outward to grip as you tighten the nut. Drill deeper than the embedment and clear the dust before setting.
Can you use sleeve anchors in brick?
Yes — that's their strength. Sleeve anchors work in solid concrete, brick, concrete block, and even mortar joints. Because the sleeve expands along its whole length rather than wedging at one point, it puts less splitting stress on the material, which is exactly why it holds in brick and block where a wedge anchor would crack them.
Sleeve anchor vs wedge anchor — which for brick?
For brick or block, choose a sleeve anchor. A wedge anchor concentrates its expansion force at the tip and will split brittle masonry, so it's for solid concrete only. A sleeve anchor spreads the force along the hole, so it holds in brick, block and mortar without cracking them. In solid concrete either works; in anything more brittle, the sleeve is the safer pick.
Do sleeve anchors work in mortar joints?
Yes. Mortar joints are one of the places a sleeve anchor is preferred, because it grips gently along the sleeve rather than wedging hard at the tip. For the strongest hold in a brick wall, setting the anchor into the brick itself is usually better than the mortar, but the joint works when the layout requires it. Follow the manufacturer's guidance for the base material and load.
Full sleeve anchor drill-bit chart
Download PDFSleeve anchor drill bit size chart
| Sleeve anchor size | Carbide drill bit |
|---|---|
| 1/4" | 1/4"6.4 mm |
| 5/16" | 5/16"7.9 mm |
| 3/8" | 3/8"9.5 mm |
| 1/2" | 1/2"12.7 mm |
| 5/8" | 5/8"15.9 mm |
| 3/4" | 3/4"19 mm |
The bit is the same diameter as the anchor — the 1:1 rule; the sleeve compresses to grip as the nut is tightened. Drill deeper than the embedment and blow the hole clean.
Works in concrete, brick, block and mortar joints — the versatile masonry anchor, and the right choice where a wedge anchor would split the material. Requires a hammer drill and a carbide-tipped bit (ANSI B212.15).
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Where these numbers come from
The 1:1 bit-to-anchor rule is cross-referenced across major sleeve-anchor manufacturers’ published instructions, which agree: the hole diameter equals the anchor diameter. The base material (concrete, brick, block, mortar), embedment and load determine the exact anchor and spacing — always follow the specific anchor’s data sheet and local code for heavier work. This page covers sleeve anchors only; wedge, Tapcon and drop-in anchors get their own pages.
These are general DIY sizing conventions for sleeve anchors in concrete, brick and block. For heavy, structural, or code-governed work, follow the anchor manufacturer's published data and your local building code.