Hexagon Head Concrete Bolt Serbolt (Thunderbolt)

Serbolt screwbolts with hexagon head for concrete, blocks, brick and stone. Quick and easy install screw directly into a hold drilled in the substrate which eliminates the need for expansion fixings. Self tapping thread makes these removable and reuseable.

Drilling size is the same as the body diameter

PLEASE NOTE M6 HAS A FLANGED HEX HEAD