Timco 00044COLLW Collated Timber To Light Section Screws - Countersunk - Wing-Tip - Self-Drilling - Exterior - Silver Organic 4.8 X 44

Specifically Designed To Attach Wood To Metal (Max. 4.0Mm). Coarse Self-Tapping Thread With Wings Designed To Ream Out The Timber This Helps The Screw 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. Exterior Plating To Achieve A High Corrosion Resistance.PTDTIM00044COLLW