Zinc plating provides corrosion resistance

5/8-18 x 7 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (55)

1 1/8-7 x 3 1/2 A307A Hex Bolt Plain Steel

They’ll also fit well with other structural pieces

With a pack of 900

5/16 Extra Heavy Flat Washers Yellow Zinc CR+6 Domestic USA - Carton (5000) 1/4-28 Grade 5 Hex Cap Screws Plain - Domestic USA Zinc plating provides corrosion resistance5 16 Extra Heavy Flat Washers Yellow Zinc CR+6 Domestic USA Carton (5000) is engineered for extreme load distribution, these washers are substantially thicker than standard types, ideal for oversized or slotted holes and heavy machinery. The CR+6 plating offers maximum corrosion resistance and durability, favored in non RoHS industrial, defense, and specialized applications requiring the highest level of zinc chromate protection. Choose Domestic USA