S-93604A708 3/8"-16 x 16" 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
- Superior corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term durability in harsh industrial environments.
- Enhanced anti-rotation performance due to the square neck design, preventing bolt spin during installation and use.
- High tensile strength of 60,000 psi and Grade 2 classification for reliable load-bearing in demanding applications.
- Excellent thread engagement with UNC coarse threading and Class 2A fit, facilitating quick assembly and vibration resistance.
- Optimized for heavy-duty fastening with a 16" length and partial threading, ideal for thick materials and structural connections.
- Consistent hardness (Rockwell B70) for wear resistance and repeated use without deformation.
- Compliance with industry standards including ASTM A307 and ASME B18.5, ensuring quality and interchangeability.
Professional Applications & Engineering Value
This hot-dipped galvanized steel carriage bolt is engineered to address common industrial challenges such as corrosion, loosening under vibration, and high-stress failures. The square neck design locks securely into materials, eliminating rotation during tightening and providing reliable anti-torque performance in wood-to-metal and structural steel applications. With a 3/8"-16 UNC coarse thread and Grade 2 strength, it offers robust fastening for construction, agricultural equipment, and transportation infrastructure. The partial threading allows for effective clamping in thick assemblies, while the zinc coating from hot-dipping ensures extended service life in outdoor or corrosive settings, reducing maintenance costs and downtime.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It meets manufacturing specifications under ASTM A307 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 safety for environmental and health standards in industrial use.
