Galvanized nuts are over tapped per ASTM A563

1 x 21 ITM SDS Max X-Cutter Hammer Drill Bit

3/8-16 x 3 3/4 Simpson Wedge Anchor 304 SS (50)

Coarse threads run approximately 2/3 up the shank to help draw the decking tightly to the substrate

10 x 3 1/2 Simpson Bugle-Head Wood Decking Screws - Square Drive T17 316 SS - 5 lbs Pack (270)

1/4-20 x 2 1/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) 3/4-10 Socket Cap Screws Zinc Plated Galvanized nuts are over tapped1 4 20 x 2 1 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) . Grade 8 Hex Cap Screws are manufactured in the USA from medium carbon alloy steel. In diameters 1 4 to 1 1 2 inches our Grade 8 material meets or exceeds SAE J429 Grade 8 specifications. Diameters over 1 1 2 inches meet or exceed ASTM A354 Grade BD. All material is manufactured with rolled threads. Yellow zinc plated bolting will meet or exceed ASTM F1941. Typical hardness on