Timco Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Zinc 5.5 x 85 - 100 Pieces Compression Waste The de-scaling process will release

The de-scaling process will release carbon dioxide gas (CO2)

Specification

GIS rails—anything plumbers need for new installations in shell construction and industry

Flush cut blades are designed for a fine

Timco De-Burring Countersink 15-20mm product description:

Timco Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Zinc 5.5 x 85 - 100 Pieces Compression Waste The de-scaling process will releaseDescription Timco Metal Construction Timber to Heavy Section Screws Countersunk Wing Tip Self Drilling Zinc 5. 5 x 85 100 Pieces product description: 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. Product manual