WHAT DOES HARGA TIANG LISTRIK BETON 7 METER MEAN?

Tapcon screws are a preferred anchor that stands for self tapping (self threading) concrete screw. More substantial diameter screws are called LDT's. This kind of fastener requires a pre-drilled hole—employing a Tapcon drillbit—and are then screwed into the outlet working with a normal hex or phillips little bit.Angkur dengan cara kerja frictio