Bi-Metal Countersunk Self Drilling Light Wing Tip Screw Pan Concrete Bolts Reverse-wound for easy application by

Reverse-wound for easy application by hand or foot

Metal Construction Timber to Heavy Section Screws - Countersunk - Wing-Tip - Self-Drilling - Zinc

Specifically designed to attach wood to light section steel (Max

PACK SIZE - 100

Bi-Metal Countersunk Self Drilling Light Wing Tip Screw Pan Concrete Bolts Reverse-wound for easy application byMetal Construction Timber to Light Section Screws Countersunk Wing Tip Self Drilling Bi Metal Exterior Silver Organic Specifically designed to attach wood to light section steel (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. Hardened carbon steel drill tip