5/8-11 x 4 1/4 Hex Cap Screw SS 316 (A4)

7/16-20 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (200)

5/8-18 x 8 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (25)

1/2-13 x 4 Grade 8 Hex Cap Screw Plain Domestic USA (25)

7/8-9 x 2 1/2 Socket Cap Screw Alloy

1/2-13 x 5 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (25) 12" Aircraft Bits Cobalt - Fractional 5/8-11 x 4 1/4 Hex1 2 13 x 5 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