anchor Hex Head Tapcon Anchor 4H45 45mm pack of 100 *new*. Tapcon masonry screws are the original masonry fastening system that cuts it's own thread into concrete, brick and hollow block. Manufactured from special high quality cold forming steel, heat treated to give hard cutting surfaces for efficient thread cutting action in a wide variety of masonry materials. The finish on Tapcon anchors is electroplated and passivated zinc with a colour identifying blue coating. Suitable for use in: • Concrete • Masonry • Blockwork • Pre-cast hollow concrete beams • Wood