Timco Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Exterior - Silver Organic 5.5 x 55 - 200 Pieces Pipe Threaders Thin sheet Metal – 3mm

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Timco Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Exterior - Silver Organic 5.5 x 55 - 200 Pieces Pipe Threaders Thin sheet Metal – 3mmDescription Timco Metal Construction Timber to Heavy Section Screws Countersunk Wing Tip Self Drilling Exterior Silver Organic 5. 5 x 55 200 Pieces product description: Specifically designed to attach wood to metal (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. Product