S-97000A514 1/4"-20 x 2" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Maximum Load Capacity: With 150,000 psi tensile strength and Grade 8 classification, these bolts withstand extreme stress, preventing failure in critical applications.
• Superior Corrosion Protection: Zinc yellow-chromate plating provides excellent resistance to rust and environmental degradation, extending service life in harsh conditions.
• Secure Anti-Rotation Design: The square neck integrates seamlessly into materials, preventing bolt spinning during installation and ensuring stable, reliable fastening.
• Optimized Thread Engagement: Fully threaded UNC coarse threading allows for deep penetration and strong hold in various materials, reducing the risk of stripping.
• Enhanced Durability: Rockwell C33 hardness ensures the bolt maintains its structural integrity under repeated loads and vibrations.
• Wide Application Compatibility: The rounded carriage head and 2" length make it ideal for wood-to-metal and heavy machinery assemblies, offering versatile fastening solutions.
• Industry Compliance Assurance: Manufactured to ASME B18.5 and SAE J429 standards, guaranteeing consistent quality, dimensional accuracy, and performance reliability.

Professional Applications & Engineering Value

These Grade 8 carriage bolts are engineered to address common industrial challenges such as joint failure and corrosion in heavy-duty environments. The zinc yellow-chromate plating significantly enhances corrosion resistance, making them suitable for outdoor machinery, agricultural equipment, and construction frameworks exposed to moisture. The square neck design prevents rotation during torque application, ensuring precise alignment and reducing installation time. With fully threaded UNC coarse threading and Class 2A thread fit, they provide superior grip in wood, metal, and composite materials, minimizing loosening from vibrations. Ideal for automotive, structural, and manufacturing sectors, these bolts deliver reliable performance where high tensile strength and durability are paramount.

Specification Summary & Compliance

This product adheres to Class 2A thread fit for consistent engagement and UNC coarse threading (1/4"-20) per standardized dimensions. Manufacturing complies with ASME B18.5 and SAE J429 specifications, ensuring precise head diameter (0.594"), length (2"), and mechanical properties. The zinc yellow-chromate finish meets RoHS and REACH environmental standards, providing safe and sustainable fastening solutions for industrial use.