UM-4 - 3/16in x 3-1/4in, Box of 1,000

3/16in x 3-1/4in Masonry Screw Fasteners for concrete, brick or block. Our premium Masonry Screws are coated with Climacoat®, offering superior protection against corrosion. Sold in box of 1,000. Includes 5 drill bits per box.