Tapcon Screws vs Wedge Anchors for Concrete?
By The DIYPicks Team · Updated July 2026
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Tapcon 3/16 in Blue Climaseal Concrete Screw Anchor
The easiest, most forgiving way to fasten light-to-medium items to masonry, but not a structural anchor.
| 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
The go-to structural anchor for solid concrete, but permanent and wrong for hollow or brittle masonry.
| 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.