S-93604A737 1/2"-13 x 9" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Exceptional corrosion resistance with hot-dipped galvanized steel coating for long-lasting performance in harsh outdoor or humid environments
- Superior anti-rotation security thanks to the square neck design that prevents spinning during installation and maintains structural integrity
- High tensile strength of 60,000 PSI with Grade 2 classification ensures reliable load-bearing capacity for demanding applications
- Optimized thread engagement with UNC coarse threading and Class 2A fit provides smooth installation and consistent clamping force
- Enhanced durability with Rockwell B70 hardness rating that resists deformation under stress and repeated use
- Versatile partial threading allows for both secure fastening and adjustable positioning in various material thicknesses
- Wide rounded head profile distributes load evenly and prevents pull-through in wood and soft materials
Professional Applications & Engineering Value
These hot-dipped galvanized steel carriage bolts deliver critical engineering solutions where corrosion resistance and structural integrity are paramount. The square neck design fundamentally addresses rotational instability in wood-to-metal and structural connections, eliminating the need for additional locking mechanisms. With UNC coarse threading and partial threading, installation efficiency is maximized while maintaining precise alignment in heavy timber construction, agricultural equipment, and outdoor infrastructure. The Grade 2 classification combined with 60,000 PSI tensile strength ensures these fasteners withstand dynamic loads and vibration in demanding environments like bridge decking, marine structures, and industrial framing, where failure is not an option.
Specification Summary & Compliance
This 1/2"-13 carriage bolt features precise Class 2A thread fit with UNC coarse thread specifications and 6" minimum thread length. Manufactured to meet ASTM A307 and ASME B18.5 standards for dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
