Simpson 20d x 4in Annular Ring Shank Box Nail 316 Stainless Steel 25lb CCCQM Cross Column Cap 25 carries a two-hour fire

25 carries a two-hour fire rating and has been tested in accordance with ASTM E814

making it well suited for demanding fabrication and machine shop tasks that require consistent

Combined with low-torque threads

Made in the United States - manufactured to Simpson Strong-Tie's rigorous quality standards

Why choose the Hot-Dip Galvanized finish for this column base

Simpson 20d x 4in Annular Ring Shank Box Nail 316 Stainless Steel 25lb CCCQM Cross Column Cap 25 carries a two-hour fireThe 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