TIMco HW120B BZP Wing Tip No.5 Self Drilling Screw 5.5 x 120 Zinc (Box of 100)

ManoMano

The Timco Wing Tip heavy section screw is specifically designed to attach wood to metal (Max 12mm). Fine 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. A bright Zinc electrolytic plating with a clear toxin free finish. Size - 5.5 x 120mm Box Quantity - 100 Colour/Plating - Zinc Head Type - Phillips Countersunk Bit Size - PH3

Zoro Tools

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. Please Note : Due to geographical locations we are unable to deliver to Highlands

Amazon

Hex head with washer Self-drilling tip Zinc plated to 3-5 microns Designed for heavy sectional work, Weight: 2.7778245012 Pounds, Manufacturer: TIMco