20d (4″) Preservative-Treated Wood Decking Nail, Annular Ring Shank, 25lb (1,000 fasteners)

Simpson T20PTDB wood decking nails are available in either type 304 or type 316 stainless steel for superior corrosion resistance. Checker pattern on nail head blends well with wood grain, reduces glare from sunlight and accepts surface finishes. Annular ring shank increases pull-out resistance to provide a secure attachment that reduces cupping.