18-8 stainless steel is best for applications where corrosion resistance is required

Grade 5 Hex Cap Screws are manufactured from medium carbon steel

3/4 x 13 ITM SDS Max X-Cutter Hammer Drill Bit

#37 Heavy Duty Jobber Drill Bit

7/16-20 x 3 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (25)

1/2-13 x 3 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) OlyLog Log Home Fasteners 18-8 stainless steel is best1 2 13 x 3 3 4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) . 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