3/8"-16 × 2‑1/4" Carriage Bolt – Grade 8, Plain Finish

Designed for applications that require extended fastening depth and high structural integrity, the 3/8"-16 × 2‑1/4" Grade 8 carriage bolt delivers reliable performance under demanding conditions. The smooth, domed head provides a clean finished appearance, while the square neck is engineered to seat firmly into wood or metal to prevent rotation during installation. 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 required. Commonly used in machinery frames, equipment mounts, fixtures, and structural connections requiring secure, longer‑reach fastening.