CONFAST 3/8" x 3" Zinc Plated Large Diameter Concrete Screw
Concrete screw designed to cut its own thread in properly drilled holes with low torque and a serrated hex washer head. One customer notes strong holding power for securing safes and wood-to-brick applications
Highlights
- self-threading concrete screws
- low torque installation
- secure hold with serrated washer head
Pros
- cuts its own thread into concrete
- low torque installation
- serrated hex washer head prevents back-out
- single piece design, no assembly
Cons
- some users report spinning without gripping
- not rated for outdoor/wet/damp environments
Best For
Features
- Cuts its own thread into concrete when driven into a properly drilled hole
- Low torque threads for easier installation
- Serrated hex washer head helps resist back-out
- Single-piece design requires no assembly
- Uses a standard bit size matching the anchor diameter
