Purchase Green recommends 5", 40DD, 4GA bright common nails for securing your turf field. We recommend using nails every 2' to 3' on center. For installations not using a perimeter framing material they should be used along the perimeter every 6". They are also recommended for securing your filter fabric/weed barrier.
Nails can also be used along the seam (recommended in conjunction with seaming tape/glue) when you run into tough spots where the 6" sod staples continue to bend.
Nails come in a 50lb , 25lb or 10lb box.