Product Info Catalog Hardware Fasteners Screws Tapper Concrete Screw with Phillips Flat Head, 1/4 x 2-3/4-In., 100-Pk. Request a Quote UPC: 08236385748 SKU: 724583 Model Number: 375310 Rawl, 100 pack, 1/4" x 2-3/4" phillips flat head tapper concrete screw with bit, blue perma-seal coating, 1-1/2" embedment, ultimate tension 4,000 psi concrete 1,850 lb, ultimate shear 4,000 psi concrete 2,270 lb.