Timco 7.5 x 100 7.5mm Multi Fix Concrete Screws Box of 100 Zinc Yellow

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, Weight: 2.20462262 pounds, Manufacturer: TIMco