7.5mm VF Frame Screw CSK Concrete Screw
Comes in sizes: 7.5 x 40, 7.5 x 60, 7.5 x 80, 7.5 x 100, 7.5 x 120, 7.5 x 150.
Concrete Screws that thread directly into pre-drilled pilot holes No anchor or plug is needed. They have a very high pull out rating and can also be used with covers.
These use a Torx-T30 drive. Screws will be packaged together if you buy multiple. (T-30 bit not included)