When attaching rails to a fence post  it is important to use a fastener that will survive the corrosion present when using pressure treated ACQ wood. My previous post on ACQ goes into detail about this corrosion.  When attaching an angled rail that will not fit the Simpson FB24Z  bracket I like to use a stainless screw like the one pictured here. The increased pull out resistance afforded by the screw is useful in keeping the rail fast during wind or other stressors.  A typical steel screw will become brittle and frequently snap or shear off in this application, even ACQ rated screws. I also use the stainless screws on the upper fence bracket for this same reason.fence bracket install2

I prefer to use a strap nailer like the one pictured below to attach the lower brackets where the pull-out force is not as great. This gun shoots a 16d 2″ hard galvanized nail. The heavy thickness of this nail and it’s hard galvanized coating ensures it will resist the corrosion present from ACQ treatment. Nail steel is also much more elastic than screw steel and far less likely to become brittle and shear the way a screw might. Careful choice of fasteners is another small detail in constructing a long lasting fence project. There are a wide array of materials available, choosing the correct one for your specific application will ensure a successful install.