The Hillman Group 375286 Hex Washer, Head Slotted Tapper Concrete Screw Anchor,

Product Description Rawl, 100 pack, 3/16 inch x 1-1/4 inch hex washer head tapper concrete screw anchor with bit, blue perma-seal coating, 1 inch embedment, ultimate tension 4,000 psi concrete 730 lb, ultimate shear 4,000 psi concrete 1,090 lb. From the Manufacturer State of the art thread design cuts into concrete. Tapper screws are designed for fastening applications in concrete, block, and brick. Use Tapper screws to attach electrical equipment, two by fours, downspout straps, hose reels, flag poles, hurricane shutters, and more. Tapper screws are perfect for indoor and outdoor use. For light to medium duty applications.