Multi Fix Concrete Screws Pk4

• 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.