They are nickel plated for appearance

3/4-10 x 10 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (15)

5/16-24 x 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100)

5/16-18 x 3/4 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (1650)

12 x 2 Simpson Flat-Head Self-Drilling Screw w/ Wings - Square Drive 410 SS - Carton (1000)

5/8-11 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (75) Wedge Anchors 304 Stainless Steel They are nickel plated for5 8 11 x 5 Grade 8 Hex Cap Screw Plain Domestic USA (75). 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 diameters 1 4 to 2