DeWALT® Screw-Bolt™ screw anchor, high performance, 1/2 in dia, 3 in OAL, hex head drive, steel, 1-3/4 in minimum embedment depth, 1/2 in drill, zinc plated, applicable materials: normal weight concrete/sand lightweight concrete/concrete over steel deck/concrete masonry/solid clay brick, 3/4 in head, 1-1/4 in maximum work thickness, 5985/6555/7570/9270/10705 lb shear strength, 2840/3115/3595/4400 lb tensile strength. DeWALT® PFM1411380 Screw-Bolt™ High Performance Screw Anchor, 1/2 in dia, 3 in OAL, Hex Head Drive, Steel