Lindstrom 1/4 in. x 2-3/4 in. Phillips Flat Head Masonry Fasteners (100 per Pack)

Concrete Screws Tap threads into a predrilled hole in concrete, brick or block. The threads are hardened to cut the base material. The threads are created with a special design that allows for removal of the dust that is created while cutting the threads.|Requires 3/16 in. concrete drill bit|Uses standard Phillips bit|Sold in packs of 100|Corrosion-resistance and long-lasting performance due to special blue coating|Pair with corresponding nut and washer in like finishes|Common project applications: electronics, license plates, electrical boxes, switch plates, furniture