4d (1-1/2") Annular Ring Shank Spiral Roofing Nail - 304 Stainless Steel, 1 lb. Pkg STandoff Bases These screw anchors are intended

These screw anchors are intended for exterior applications and some interior pressure-treated wood sill plate applications

Simpson Strong-Tie® bull-point chisels are designed for use in general concrete and masonry demolition

Simpson hole cleaning brushes are required for properly cleaning drilled holes prior to adhesive anchor installation

Double-Barrier Coating – Resists corrosion in wet

4d (1-1/2") Annular Ring Shank Spiral Roofing Nail - 304 Stainless Steel, 1 lb. Pkg STandoff Bases These screw anchors are intendedSimpson ring shank roofing nails have a large flat head to provide extra bearing surface to firmly secure roofing material. A spiral "thread" on the shank causes the nail to spin during installation, creating a thread like interlock with the wood.