5/16"-18 × 2" Carriage Bolt – Grade 8, Plain Finish

Intended for applications that require additional grip length and high structural strength, the 5/16"-18 × 2" Grade 8 carriage bolt delivers reliable performance in demanding fastening situations. The rounded head provides a smooth, finished appearance, while the square neck is designed to seat firmly into wood or metal to prevent rotation during tightening. Manufactured from heat‑treated alloy steel, this Grade 8 fastener offers high tensile strength suitable for load‑bearing and high‑stress assemblies. The plain, uncoated finish is ideal for controlled environments or applications where surface coatings are not desired. Common uses include machinery frames, equipment mounts, fixtures, and structural connections requiring secure, long‑reach fastening.