THE BESI HITAM DIARIES

Tapcon screws are a preferred anchor that means self tapping (self threading) concrete screw. Bigger diameter screws are often called LDT's. Such a fastener requires a pre-drilled gap—employing a Tapcon drillbit—and are then screwed into the hole applying a typical hex or phillips bit.Angkur dengan cara kerja friction akan menciptakan gaya gese