S-93548A744 1/2"-13 x 10" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior Anti-Rotation Performance with a square neck design that locks securely into materials, preventing spinning during installation and ensuring stable connections in wood and metal assemblies.
• Enhanced Corrosion Resistance through zinc-plated steel construction, providing reliable protection against rust and extending service life in outdoor or humid industrial environments.
• High Tensile Strength of 60,000 PSI (Grade 2) for dependable load-bearing capacity, making it ideal for heavy-duty applications in construction and machinery without risk of failure.
• Optimized Thread Engagement with UNC coarse threading and Class 2A fit, enabling faster assembly, reduced cross-threading, and secure fastening in various materials.
• Durable Material Hardness rated at Rockwell B70, ensuring the bolt maintains integrity under stress and resists deformation during repeated use.
• Wide Rounded Head Profile distributes clamping force evenly, minimizing surface damage and providing a flush finish for safer, cleaner installations.
• Compliance with Industry Standards including ASTM A307, SAE J429, and ASME B18.5, guaranteeing consistent quality, dimensional accuracy, and interoperability in professional projects.

Professional Applications & Engineering Value

This zinc-plated steel carriage bolt is engineered to address common challenges in heavy-duty industrial and construction applications, such as securing timber frames, machinery bases, and structural supports. The partially threaded design with a square neck ensures anti-rotation stability, preventing loosening under vibration—a critical feature for dynamic environments. Made from Grade 2 steel with UNC coarse threads, it offers excellent tensile strength (60,000 PSI) and ease of installation in wood or metal, reducing assembly time. The zinc plating enhances corrosion resistance, making it suitable for outdoor use, while compliance with ASTM A307 and other standards ensures reliability. Ideal for construction bolts and industrial fasteners, it delivers long-term performance by combining material durability with precise thread fit and environmental compliance.

Specification Summary & Compliance

This carriage bolt features precise dimensions, including a 1/2"-13 UNC coarse thread with Class 2A fit for standard tolerance, ensuring consistent threading and ease of use. It meets ASTM A307, SAE J429, and ASME B18.5 specifications for material and manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental regulations for safe, sustainable use in global markets.