1/4"-20 × 1‑1/2" Carriage Bolt – Grade 8, Plain Finish

Manufactured for high‑load fastening where strength is a priority, the 1/4"-20 × 1‑1/2" Grade 8 carriage bolt combines a clean finished appearance with exceptional mechanical performance. The rounded head sits flush for a smooth exterior, while the square neck embeds into the material to prevent rotation during tightening. Made from heat‑treated alloy steel, this Grade 8 fastener is suitable for demanding structural and industrial assemblies. The plain finish is ideal for applications where coatings are unnecessary or where direct metal contact is preferred. Common applications include machinery frames, equipment mounts, fixtures, and structural connections requiring dependable clamping force.