Simpson 8d x 2 3/8" Brown, 20°-22° Plastic Strip, Casing Head, Ring-Shank Nail 304 SS 1000PkModel No. S11A237KJB Coating Material. Type 304 Stainless Steel Gauge. 11 Penny size. 8d Length (in.) 2 3 8 Head Diameter (in.) 1 4 Shank Diameter (in.) 0. 12 Shank Type. Annular Ring Shank Head Type. Casing Head Head Pattern. Checkered Color. Brown Packaging Qty. 1000 These nails feature a countersunk casing head with a durable painted finish that helps the heads blend with decking and siding material. Compatible with many major manufacturers'