Tapcon Screws vs Wedge Anchors for Concrete?
By Nate Sawyer, Editor · Updated July 2026
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Tapcon 3/16 in Blue Climaseal Concrete Screw Anchor
Tapcon's 3/16 in Climaseal concrete screw threads directly into a drilled hole in concrete, brick or block with no expansion plug, and it's removable and repositionable unlike wedge or sleeve anchors. It's the easiest way to fasten light-to-medium items to masonry, but the hole must be drilled exactly or it strips and pull-out is far below a wedge.
| Base material | Concrete, brick, block |
|---|---|
| Load rating | ~650 lb ultimate tension in 4,000 psi concrete (per anchor, derate heavily) |
| Anchor type | Screw-in masonry anchor (no expansion plug) |
| Drill bit | 5/32 in for 3/16 in screw (bit included) |
| Screw | Integral, flat or hex head |
| Best use | Furring strips, brackets, ledger boards, conduit on masonry |
Red Head 3/8 in Hex-Nut Concrete Wedge Anchor
Red Head's 3/8 in wedge anchor is the go-to structural fastener for solid poured concrete: drill, hammer it in, and tighten the nut so the sleeve expands to lock. Code-listed, it gives the highest holding strength here for posts and ledgers. But it's permanent once expanded, works only in solid concrete not brick or block, and needs a hammer drill.
| Base material | Solid poured concrete only |
|---|---|
| Load rating | Thousands of lb in strong concrete (code-listed, derate per spacing) |
| Anchor type | Expansion wedge anchor |
| Drill bit | 3/8 in |
| Screw | Integral stud with hex nut and washer |
| Best use | Structural supports, posts, machinery, ledger boards in concrete |
Our verdict
Pick by load and permanence. Tapcon screws thread directly into a drilled hole, are removable and repositionable, and are ideal for light-to-medium jobs like furring strips, brackets, and conduit. Red Head wedge anchors expand to grip and deliver far higher structural pull-out, making them the choice for posts, machinery, and ledger boards, but they are permanent and only for solid concrete. If you might undo it later or the load is modest, use a Tapcon; if it is structural and solid concrete, use a wedge. Both require a hammer drill and an exact hole.
Frequently Asked Questions
- Which concrete anchor can you remove later?
- Tapcon screws. They thread directly into a drilled hole and are removable and repositionable. A wedge anchor expands to grip and cannot be backed out once set — it is permanent.
- Which anchor holds more weight in concrete?
- The wedge anchor, by a wide margin — thousands of pounds in strong concrete and code-listed for structural use, versus roughly 650 lb ultimate for a 3/16 in Tapcon that must be derated heavily. Use the wedge anchor for structural supports and posts.
- Can you use a wedge anchor in brick or block?
- No. It is for solid poured concrete only and will crack the material or fail to hold in brick, block or mortar. Tapcons do work in concrete, brick and block, which is part of their appeal.
- Do both need a hammer drill?
- Effectively yes — the wedge anchor requires one, and Tapcons need one for anything but the softest block. Tapcons also demand exact hole depth and diameter or the screw strips and loses grip, which is their most common failure.