Typical hardness is HRB 70-100

3/8-24 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

7/16-20 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (50)

25/64 Cobalt Heavy Duty Jobber Drill Bit

3/4-10 x 9 A307A Hex Bolt Zinc Plated

9/16-12 x 2 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) ALLIGATOR Anchors Typical hardness is HRB 70-1009 16 12 x 2 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