DeWALT® Screw-Bolt™ screw anchor, heavy duty, 5/8 in dia, 4 in OAL, hex washer head drive, carbon steel, 2-1/2 in minimum embedment depth, zinc plated, applicable materials: normal weight concrete, lightweight concrete, concrete over steel deck, grouted concrete masonry and brick masonry, 37/64 in H head, 1-1/2 in maximum work thickness, 17,170 lb shear strength, 8,885 lb tensile strength. DeWALT® PFM1411580 Screw-Bolt™ Heavy Duty Screw Anchor, 5/8 in dia, 4 in OAL, Hex Washer Head Drive, Carbon Steel