2 1/4-4 1/2 A563 Grade A Heavy Hex Nut Zinc Plated

5/8-18 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (70)

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

Use for projects exposed to harsh marine or many chemically caustic conditions

1 1/2-6 x 7 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (12)

5/8-11 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (55) 5/8-18 Hex Cap Screws 18-8 Stainless Steel 2 1/4-4 1/2 A563 Grade5 8 11 x 7 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (55) . 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