Simpson 20d x 4" Preservative-Treated Wood Decking Nail, 316 Stainless Steel Grinders The 3000B features a one-piece

The 3000B features a one-piece cast iron trunnion

3 x Simpson Auto-Set T20 6-Lobe Driver Bits (2 in

holes eliminate the need for predrilling

Annular-ring shank (ring shank) - the grooved shank locks into wood fibers to significantly increase withdrawal resistance

Simpson 20d x 4" Preservative-Treated Wood Decking Nail, 316 Stainless Steel Grinders The 3000B features a one-pieceSimpson 20d x 4" Preservative Treated Wood Decking Nail in Type 316 Stainless Steel is a heavy duty exterior fastener engineered for deck and dock construction where long term performance in harsh outdoor conditions is essential. Built by Simpson Strong Tie, this annular ring shank nail is purpose designed for use in both green and seasoned preservative treated pine, delivering the corrosion resistance and withdrawal strength needed to keep outdoor