GRK 36079#8x2-1/2 Star Drive Trim Head 305 Stainless Steel RT Composite Exterior Trim Screws, 1120/Box

Built in washer head allows zero gap joints Self-Tapping W-cut thread design Zip-Tip to illevate pre-drilling unless materials require Use GRK T-10 BitYou may also like GRK FASTENERS 01101 R4 #9 x 2-1/2" SCREWS 575CT.