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The Simpson Strong-Drive PPHD Sheathing-to-CFS Screw is rated for a maximum thickness of two layers of 12 gauge steel
Its economical design requires a minimal number of nails or screws to achieve maximum download capacity
Diameter 4-3/8" (111mm)
ensuring the code-required minimum of seven bolt diameters from the end of the post when installed flush with the sill plate
Simpson 20d x 4in Annular Ring Shank Box Nail 316 Stainless Steel 25lb BC Post Base The Simpson Strong-Drive PPHD Sheathing-to-CFSThe Simpson T20ABNB 20d x 4" Annular Ring Shank Box Nail in Type 316 Stainless Steel is engineered for demanding construction applications where superior corrosion resistance and long term holding power are non negotiable. Made in the United States, this 25 lb bulk pack delivers professional grade performance in coastal, marine, and high moisture environments. The annular ring shank dramatically increases withdrawal resistance compared to smooth shank