Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Framing Nails G90 Galvanized Finish: Zinc galvanized

G90 Galvanized Finish: Zinc galvanized coating (G90) delivers extra corrosion resistance for lasting durability

fastener-free deck surface without sacrificing structural performance

Material Carbide-Tipped

Compatible with Simpson Strong-Tie powder loads and pins - seamless integration with the Simpson Strong-Tie direct fastening ecosystem

What material and finish is used on the ECC5 1/4-6

Simpson #12 x 4" Self-Drilling Hex-Washer Head Screw, 316 Stainless Steel Framing Nails G90 Galvanized Finish: Zinc galvanizedModel No. T12400HDU Coating Material. Type 316 Stainless Steel Screw size. #12 Drive Type. 5 16 in. Hex Length (in.) 4 Thread Type. Tapping Threads Head Type. Hex Washer Head TPI. 14 Point Type. Drill Point Use this Stainless Steel Self Drilling Hex Washer Head Screw for fastening aluminum and fiberglass (but not for steel). Applications Aluminum and fiberglass fastening (not steel) Key Features Indented hex washer head Tapping screw thread #3 drill