THE DEFINITIVE GUIDE TO HARGA BESI HOLLOW

Tapcon screws are a favorite anchor that stands for self tapping (self threading) concrete screw. Bigger diameter screws are known as LDT's. This type of fastener demands a pre-drilled hole—using a Tapcon drillbit—and are then screwed into the opening using a normal hex or phillips bit.The force-transfer system is based on mechanical interlock.