4d (1-1/2") Annular Ring Shank Spiral Roofing Nail - 304 Stainless Steel, 1 lb. Pkg STandoff Bases and other heavy-duty metal connections

and other heavy-duty metal connections

maintenance-free

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

Double-Barrier Coating – Resists corrosion in wet

These anchors are designed to drive straight into concrete without needing sleeves or inserts

4d (1-1/2") Annular Ring Shank Spiral Roofing Nail - 304 Stainless Steel, 1 lb. Pkg STandoff Bases and other heavy-duty metal connectionsSimpson 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.