Wing Tip Self Drill Timber To Heavy Steel 5.5x120mm Zinc HW120B 100box

Specifically designed to attach wood to heavy section steel (Max. 12mm). Metric thread with wings designed to ream out the timber, so the screw can achieve Max. R.P.M. without burning out. When the wings hit the metal they will break off to permit the thread to self-tap into the metal. NOTE: Partially threaded.



Recess Type : Phillips

Point Type : Self-Drilling No.5

Effective Thread Length mm : 51 *P/T

Max Drilling Thickness mm : 12.0

To Suit Timber mm : 50 - 84