Need to attach something to concrete, brick, or stone? These MKT Conset masonry screw anchors (often called Tapcons) are the real deal. They're made from high-strength steel with a tough fluorocarbon coating that resists rust and corrosion—even passing a 1000-hour salt spray test. The 3/16-inch diameter by 3-1/4-inch length is a versatile size for a ton of projects, from installing shelving brackets to securing door frames. The Phillips flat head sits flush for a clean look, and the self-tapping tip means you don't need a separate tap—just drill a pilot hole (a bit is included in the box) and drive it in. They work in solid or hollow masonry, wood, and stone. Each box contains 100 screws, so you've got plenty for big jobs or future fixes. Whether you're a DIYer tackling a garage organization project or a pro on a job site, these anchors provide strong, reliable holding power. Just remember: for softer materials, you might want to use a slightly smaller drill bit for the best grip.