1 1/4-7 x 3 1/2 A307A Hex Bolt Plain Steel

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

3/8-16 x 7 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (150)

1/2-20 x 1 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (50)

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

7/8-9 x 1 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (85) Short Arm Hex Keys Alloy 1 1/4-7 x 3 1/27 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