20d (4") Preservative-Treated Wood Decking Nail, Annular Ring Shank, 25lb (1,000 fasteners) Blue Masonry Screws Self-drilling tip eliminates the need

Self-drilling tip eliminates the need for predrilling in most materials

With a hex washer head that offers controlled driving and flush seating

The Simpson ECCOQ7-SDS2

Designed for use with the Quik Drive auto-feed system

as well as large-flange lay-in headers that are common in curtain-wall construction

20d (4") Preservative-Treated Wood Decking Nail, Annular Ring Shank, 25lb (1,000 fasteners) Blue Masonry Screws Self-drilling tip eliminates the needSimpson 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.