Fractional Size Grade 8 Carriage Bolt with Plain Finish

Fractional Size Grade 8 Carriage Bolt with Plain Finish

Fractional Size Grade 8 Carriage Bolts with Plain Finish are engineered for maximum strength in high-load structural and industrial applications. Manufactured from heat-treated alloy steel, these heavy-duty carriage bolts provide superior tensile strength and shear resistance compared to Grade 5 or standard low carbon fasteners. When projects demand extreme durability and reliable clamping performance, Grade 8 carriage bolts deliver the performance professionals depend on.

Grade 8 Alloy Steel for Maximum Load Capacity

Produced to SAE Grade 8 specifications, these carriage bolts are heat-treated to achieve exceptional strength and hardness. This makes them ideal for applications involving heavy vibration, shock loads, and structural stress. Common uses include heavy timber framing, agricultural equipment, machinery assembly, trailer construction, and reinforced structural components. Grade 8 fasteners are designed to maintain integrity under demanding conditions where lower-grade bolts may fail.

Domed Head with Square Neck for Secure Installation

The smooth, round domed head provides a finished appearance while eliminating exposed wrench flats. Beneath the head, the square neck is engineered to embed into wood or softer materials during tightening, preventing rotation. This anti-spin design allows for efficient installation by tightening the nut from one side with a wrench or impact tool. The result is secure, high-torque fastening with minimal installation effort.

Plain Finish for Controlled Environments

The plain, uncoated steel finish preserves the raw strength of the heat-treated alloy material. Best suited for indoor or dry applications, this finish provides a cost-effective solution where corrosion resistance is not a primary requirement. For exterior use, protective coatings may be recommended.

Key Specifications

• Size: Fractional diameters

• Grade: SAE Grade 8

• Finish: Plain (uncoated steel)

• Head Style: Round domed head with square neck

Fractional Size Grade 8 Carriage Bolts with Plain Finish provide maximum strength and dependable fastening for heavy-duty structural and mechanical applications.