Timco Bag of 260 x Wing Tip No.3 S/Drill – BZP – 4.8 x 38 – LW38BB

Specifically designed to attach wood to metal (Max. 4mm). Coarse self-tapping 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. 260 Pieces