#9 x 1-3/4" Quik Drive WSV Subfloor Collated Screws, Yellow Zinc, Pkg 2000 Zinc Large Diameter Masonry Screws The Simpson CC4

The Simpson CC4

Deck retrofits requiring additional tension resistance

just a properly sized pilot hole and you're ready to drive

Whether you're tackling commercial HVAC systems

This will only fit a post that measures an actual 12x12"

#9 x 1-3/4" Quik Drive WSV Subfloor Collated Screws, Yellow Zinc, Pkg 2000 Zinc Large Diameter Masonry Screws The Simpson CC4Strong Tie Quik Drive collated WSV screws are ideal for securely fastening subfloor quickly and accurately while eliminating squeaking floors associated with nails. These Yellow Zinc Chromate finished screws require less driving force than standard subfloor screws, and increase the installation speed up to 20%, allowing for quicker jobs with less wear and tear on tools and users. Designed for use with these Quik Drive Attachments PRO250 PRO300S