S-93548A652 3/8"-16 x 8" ASTM A307, SAE J429, 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 anti-rotation performance with a square neck design that prevents spinning during installation and under load
- Enhanced durability and corrosion resistance from zinc-plated steel construction, ideal for harsh industrial environments
- High tensile strength of 60,000 PSI (Grade 2) ensures reliable load-bearing capacity for heavy-duty applications
- Rockwell B70 hardness provides excellent resistance to wear and deformation over time
- Coarse UNC threading with Class 2A fit allows for faster assembly and reliable engagement in various materials
- Partially threaded shank offers a smooth grip area, reducing stress concentration and improving joint integrity
- Compliance with major industry standards including ASTM A307, SAE J429, and ASME B18.5 guarantees consistent quality and interchangeability
Professional Applications & Engineering Value
This zinc-plated steel carriage bolt is engineered to solve critical fastening challenges in construction, machinery, and structural assemblies. The square neck design securely locks into materials, eliminating rotation during torque application and vibration, which is essential for maintaining joint integrity in dynamic environments. With a 3/8"-16 UNC coarse thread and Class 2A thread fit, it ensures quick, secure installation in wood, metal, and composite substrates. The Grade 2 classification and 60,000 PSI tensile strength provide dependable performance in load-bearing applications, while the zinc plating offers corrosion resistance, extending service life in outdoor or humid conditions. Ideal for use in trailers, agricultural equipment, and framing projects, this bolt delivers reliable anti-rotation and strength where safety and durability are paramount.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit per UNC standards, with a diameter of 0.375" and a length of 8". It meets ASTM A307, SAE J429, and ASME B18.5 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
