Fractional Size Grade 5 Carriage Bolt with Clear Cr3 Zinc Plating

Fractional Size Grade 5 Carriage Bolt with Clear Cr3 Zinc Plating

Fractional Size Grade 5 Carriage Bolts with Clear Cr3 Zinc Plating provide high-strength fastening with enhanced corrosion resistance for structural, industrial, and construction applications. Engineered from heat-treated medium carbon steel, these carriage bolts deliver superior tensile strength compared to standard Grade 2 or A307 fasteners. The addition of Clear Cr3 zinc plating offers a bright, professional finish while protecting against rust and oxidation in indoor and light exterior environments.

Grade 5 Strength for Demanding Applications

Manufactured to SAE Grade 5 specifications, these carriage bolts are heat-treated to achieve increased tensile and shear strength. This makes them ideal for projects requiring dependable clamping force under moderate to heavy loads. Common applications include heavy timber framing, equipment assembly, agricultural machinery, trailer construction, and reinforced wood structures. Grade 5 hardware is well-suited for environments where vibration and mechanical stress are present.

Domed Head and Square Neck Design

The round domed head provides a smooth, finished appearance without exposed wrench flats, making it perfect for visible installations such as decking, fencing, and structural wood projects. Beneath the head, the square neck embeds into wood or soft materials during tightening, preventing rotation. This anti-spin feature allows for easy installation by tightening the nut from one side with a wrench or socket, increasing job-site efficiency.

Clear Cr3 Zinc Plating for Corrosion Protection

The Clear Cr3 (trivalent chromium) zinc coating enhances corrosion resistance while maintaining a clean, silver appearance. This RoHS-compliant finish provides protection against moisture and light environmental exposure, extending service life without compromising strength. It is ideal for interior builds and covered outdoor applications where moderate corrosion resistance is required.

Key Specifications

• Size: Fractional diameters

• Grade: SAE Grade 5

• Finish: Clear Cr3 Zinc Plated

• Head Style: Round domed head with square neck

Fractional Size Grade 5 Carriage Bolts with Clear Cr3 Zinc Plating deliver high-strength, corrosion-resistant fastening for professional-grade structural performance.