5/16″-18 x 3/4″ Hex Flange Bolts Zinc-Yellow Grade 5 Coarse Thread FT 1200 Pcs

Flange Bolts are designed with an extensive surface area beneath the head, functioning similarly to a washer. These bolts are coated with yellow zinc, enhancing their resistance to corrosion, making them well-suited for both indoor environments and industrial settings. Grade 5 fasteners are crafted from medium carbon steel and undergo quenching and tempering to enhance their tensile strength and clamping force. They are identifiable by three radial bars on the bolt head.