#10 x 2-1/2" White Painted Steel Hex Washer Head Pole Barn Self-Drilling Screws

#10 x 2-1/2" White Painted Steel Hex Washer Head Pole Barn Self-Drilling ScrewsYou may also like 1/2" x 4" Zinc Hex Washer Head LDT Tapcon Masonry Screws MSHWS-102 (25 pcs.).