1/4" x 2-1/4" Conquest T-30 Flat Head Concrete Screw, Pkg 100 DGF/DGBF/DGHF Fire Wall Hangers Coarse Lower Threads – Strong

Coarse Lower Threads – Strong pull-through that tightens boards to framing

The Simpson ABW66RZ Rough Cut 6x6 Adjustable Post Base - Zmax Finish is designed to securely attach wood posts to existing concrete

Each screw features a hex washer head for strong driving torque and a zinc-plated finish that resists corrosion in interior and dry environments

If you have a nominal post measuring 3-1/2x5-1/2" you will need an ABA46Z Post base

Use a power driver with a #3 square-drive bit

1/4" x 2-1/4" Conquest T-30 Flat Head Concrete Screw, Pkg 100 DGF/DGBF/DGHF Fire Wall Hangers Coarse Lower Threads – StrongConquest T 30 Flat Head Concrete Screws are a cost efficient solution when you need a low profile, flush finish without sacrificing holding strength. Designed for fastening into concrete, brick, or block, these screws eliminate the need for separate anchors, making installation faster and more efficient. The flat head sinks in flush with the surface, giving you a clean and finished look. The T 30 star drive helps prevent your bit from slipping and