S-93548A931 3/4"-10 x 12" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding environments.
• Enhanced anti-rotation security due to the integrated square neck design, preventing bolt spin during installation and use.
• Reliable heavy-duty fastening with Grade 2 strength and 60,000 psi tensile strength, suitable for high-stress applications.
• Optimized thread engagement through UNC coarse threading and Class 2A fit, facilitating easier assembly and consistent clamping force.
• Versatile partial threading allows for secure gripping in materials while minimizing thread exposure in non-critical sections.
• Broad industrial compliance meeting ASTM A307, SAE J429, and ASME B18.5 standards, ensuring interchangeability and safety.
• Environmental and regulatory safety with RoHS 3 and REACH compliance, making it suitable for global supply chains.

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt is engineered to address common industrial challenges such as joint loosening under vibration and environmental degradation. The square neck design locks securely into materials, eliminating rotation during torque application—ideal for wood-to-metal connections in construction and heavy machinery. With a Rockwell B70 hardness and 60,000 psi tensile strength, it withstands substantial loads without deformation. The UNC coarse thread and partial threading enhance grip in soft materials like timber, while the zinc plating provides a protective barrier against rust. Commonly used in structural frameworks, agricultural equipment, and transportation infrastructure, this bolt ensures reliable, long-term fastening where durability and compliance with ASTM A307 and ASME B18.5 standards are critical.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and UNC coarse threading (3/4"-10 size) for consistent performance. It adheres to manufacturing specifications including ASTM A307, SAE J429, and ASME B18.5, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications.