Product Description Simpson Strong Tie Roofing Tile and Slating nails Annular Ring Shank Type 304 Stainless Steel are available in Copper Aluminum and Stainless Steel. Simpson Strong-Tie S310ARN5 Description Simpson ring shank roofing nails feature a large flat head for extra bearing surface, ensuring secure attachment of roofing materials The large flat head provides extra bearing surface to firmly secure roofing material. Simpson Strong-Tie S410ARN5 Stainless Steel Roof Nail, 4D X 1-1/2", 5 3/8-inch head diameter and ., 134-inch shank diameter This product cannot be cancelled or returned after ordering**** Details The Simpson Strong-Tie® Roofing Nail – Annular Ring Shank was designed to optimize holding power, while incorporating higher levels of corrosion resistance. STD - Teräsvaarna - Simpson Strong-Tie Its large flat head provides extra bearing surface to firmly secure roofing material and its annular ring shank increases withdrawal resistance. A variety of sizes are available in Type 316 and Type 304 stainless steel Aluminum nails also available with screw shank The longer lengths are ideal for installing curved Spanish roof tiles and thicker slate. Annular ring shank increases pull-out resistance Its large flat head provides extra bearing surface to firmly secure roofing material and its annular ring shank increases withdrawal resistance. Aluminum nails are also available with a screw shank. Longer lengths ideal for installing curved Spanish roof tiles and thicker slate