TX30 COUNTERSUNK SCREW ZINC-PLATED 7.5X132 (Concrete Screw)
Frame screws, zinc plated
tested by ift-Rosenheim
assembly screw for fastening wooden window and door frames, metal or plastic to concrete, solid brick, lightweight concrete, lattice bricks, wood, etc.
self-drilling screw for fastening without dowel - rational and inexpensive