3/16 in. x 3-3/4 in. Power Pro Blue Flat-Head Concrete Screw Anchor

These durable, corrosion-resistant anchors are ICC-ES Code Compliant and are available in three colors, blue, white, and black in various lengths and 3/16″, 1/4″, and 5/16″ diameters. Unlike competitor anchors, the Power Pro Concrete Screw Anchors feature a fully threaded tip, instead of a chisel point, to quickly penetrate and sink into wood. The under head micro-nibs help flat head screws cut a clean countersink in wood. With 25% higher pullout rate, 5% higher shear value and 50% greater corrosion protection, this is the only concrete fastener pros and DIYers will ever need.