200Pcs Hex Multi-Drive Concrete Masonry Screws – Blue Tapcon-Style Tapscrews

A general rule is that the screw should embed at least 1 inch (25mm) into the base material. Measure the thickness of the material being fastened, then add your minimum embedment depth. For example, fastening a 1/2" bracket into concrete typically calls for a screw around 1-1/4" to 1-3/4" long. Select the variant length that matches your embedment requirement.

These are typically 3/16" (approximately 4.8mm) hex multi-drive masonry tapscrews — the most common diameter for light-to-medium duty concrete anchoring. Please check the variant options above to confirm the exact diameter included in this 200-pack.

Concrete screws generally require a carbide-tipped masonry drill bit sized to match the screw diameter. For 3/16" screws, a 5/32" (4mm) carbide masonry bit is typically used. Always drill to the required embedment depth plus a small clearance, and blow out dust before driving the screw.

The blue corrosion-resistant coating provides general protection against moisture and light outdoor exposure. For consistently wet environments, submerged applications, or coastal climates, a stainless steel or hot-dip galvanized fastener is generally recommended for long-term corrosion resistance.

These hex multi-drive masonry tapscrews are designed for use in concrete, brick, block, and mortar. They are not intended for use in wood, drywall, or metal without a suitable masonry substrate. Always pre-drill with a carbide masonry bit before installation.

Load capacity varies by screw diameter, length, embedment depth, and the strength of the base material. Concrete screws of this type typically handle light-to-medium duty loads such as conduit straps, furring strips, electrical boxes, and shelf brackets. For structural or heavy-load applications, consult a load table or engineer for the specific screw size and concrete strength.

Concrete tapscrews can generally be removed by reversing the drive direction, but reuse is not recommended. Repeated removal and reinstallation degrades the thread engagement in the base material, reducing holding strength. For applications requiring frequent removal, consider a sleeve anchor or drop-in anchor instead.