ForgeFix TechFast Timber to Steel Countersunk Wing Screws (No.3 Tip) - 5.5 x 120mm (50 Pack Box) (TFCUWWSD55120L)
Countersunk 5.5 x 120mm screws ideal for fixing timber to light steel frame buildings since the breakaway wings protect the thread until it reaches steel.
The screws wings create a clearance hole through the timber before breaking off once contact is made with the metal surface which allows the screws thread, which has been untouched until now, to create a strong bond with the steel frame.TORX compatible insert results in a more powerful drive.Recessed ribs to improve countersinking.Finished with an Elemtech coating which is corrosion resistant and salt spray tested to 1000 hours.Fire Resistant.Complies with all the relevant requirements of the standards relating to health, safety and environmental concerns.