Western States Hardware 77981 Masonry Tapping Screw, Coarse, 1/4 in Drive, Diamond Point

Designed for quick, safe, secure fastening for a variety of jobs in poured concrete, brick, cinder block/masonry. Provides self-threading action/maximum holding power for fastening conduit clips, junction boxes, wall partitions/insulation, window/door frames, gutters/roof flashing, shelving, cabinets, furring strips, expansion joints, stud track, duck strap, joist hangers/signs.