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

Designed to balance added grip length with high mechanical strength, the 3/8"-16 × 1‑1/4" Grade 8 carriage bolt is well suited for demanding fastening applications. The smooth, rounded head provides a clean, low‑profile appearance, while the square neck is engineered to seat securely into wood or metal to prevent rotation during tightening. Manufactured from heat‑treated alloy steel, this Grade 8 fastener delivers excellent tensile strength and durability for load‑bearing assemblies. The plain, uncoated finish is ideal for controlled environments or installations where surface coatings are not required. Common applications include machinery assemblies, equipment frames, fixtures, and structural connections requiring dependable, high‑strength fastening.