The oversize head eliminates the need for a washer

1/4 x 3 3/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

1/2-13 x 3 Hex Sleeve Anchor Zinc Plated (25)

13/16 x 8 Ship Auger Wood Bit

#16 Heavy Duty Drill Bit - Stubby Length

1/2-13 x 26 A307A Hex Bolt Plain Steel Cap Nuts Nickel Plated The oversize head eliminates the1 2 13 x 26 A307A Hex Bolt Plain Steel. A307A Hex Bolts are manufactured from low carbon steel, typically 1015 1022. Our A307A bolting meets or exceeds ASTM A307 Grade A. Material is manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Tensile strength will meet or exceed 60,000 psi.