4d (1-1/2") Simpson Ring Shank Roofing Nail - 304 Stainless Steel, 25 lb. Pkg PDPAT Powder Actuated Top-Hat Pins They resist uplift at the

They resist uplift at the heel of a truss economically

and fastener quantity must follow Simpson Strong-Tie installation guidelines and applicable code requirements

The Split-Drive anchor is a one-piece expansion anchor that can be installed in concrete

Use tables for both standard concrete and post-tension slab installations

Wind Resistance: Helps resist uplift and lateral forces caused by high winds and seismic activity

4d (1-1/2") Simpson Ring Shank Roofing Nail - 304 Stainless Steel, 25 lb. Pkg PDPAT Powder Actuated Top-Hat Pins They resist uplift at theSimpson ring shank roofing nails have a large flat head to provide extra bearing surface to firmly secure roofing material.