Concrete Screws - 7.5x120 - Flat Countersunk - Yellow

A rapid and effective light duty anchoring system for fixing into concrete, brick, stone, concrete block and wood. This through fixing provides a single solution and replaces traditional fixings such as nylon frame and hammer fixings. Designed to replace traditional masonry fixings. TX30 TX Drive recess to reduce driver wear & prevent camming-out. Serrated V-threads to achieve optimum insertion into all masonry types. Zinc plated and yellow passivated for increased corrosion resistance . High-Low thread on first 30mm to aid insertion and reduce torque. Ideal for fitting windows and door frames . Flat countersunk head with five locking ribs. All steel, non-flammable fixing conforming to BS 7671 standard's 18th edition, which requires wiring systems to be supported by materials which are unlikely to prematurely collapse in the event of a fire.