7 ga) for #12

19/64 Heavy Duty Jobber Drill Bit

3/8-16 x 1 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (675)

1/4-28 x 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (3300)

3/16 x 3 1/4 Phillips Flat Hi-Low Thread Concrete Screws Blue Ceramic Coated

1/2-20 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) 7/8-9 Hex Cap Screws 18-8 Stainless Steel 7 ga) for #121 2 20 x 2 3 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (50) . 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