Manufactured from 1005 - 1010 low carbon steel

#38 x 6 High Speed Aircraft Bit Cobalt

That's why it's holding up the sprinkler system in the Tokyo subway

1-14 x 3 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (10)

#1 Heavy Duty Jobber Drill Bit

7/8-9 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (85) Short Arm Hex Keys Alloy Manufactured from 1005 - 10107 8 9 x 1 1 2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (85) . 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