Simpson Strong Tie TTN25500H 1/4-Inch by 5-Inch Titen Concrete and Masonry Screw with 3/16-Inch Hex Head, Blue

Titen concrete and masonry screws are 3/16-inch and 1/4-inch diameter hardened screws for attaching all types of components to concrete and masonry. Available in hex and phillips head designs in standard blue, white and 410 stainless steel. Use with appropriately sized Titen drill bits included in each box. Bulk packages of 1,000 screws do not include a bit.