S-90185A240 3/8"-16 x 9" ASME B18.5, SAE J429 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 zinc-plated steel construction, extending service life in demanding environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength, ideal for heavy-duty structural applications
- Reliable anti-rotation performance thanks to the square neck design that prevents spinning during installation
- Optimized thread engagement with Class 3A fit and UNC coarse threading for faster assembly and vibration resistance
- Enhanced durability with Rockwell C25 hardness, maintaining integrity under repeated stress
- Secure fastening in wood and metal with partially threaded shank and rounded carriage head for flush mounting
- Industry compliance assurance meeting ASME B18.5 and SAE J429 standards for consistent quality
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt delivers critical engineering solutions for industrial and construction applications where vibration resistance and structural integrity are paramount. The square neck design eliminates the need for additional locking mechanisms by securely embedding into materials, preventing rotation during torque application. The UNC coarse threading and Class 3A thread fit ensure rapid installation in wood, steel, and composite materials while maintaining grip under dynamic loads. With 120,000 psi tensile strength and Rockwell C25 hardness, it withstands extreme tension in structural framing, heavy equipment assembly, and transportation infrastructure. The zinc plating provides essential corrosion protection in outdoor and high-moisture environments, making it ideal for bridge construction, agricultural machinery, and industrial platform installations.
Specification Summary & Compliance
This carriage bolt features precision 3/8"-16 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. Manufacturing complies with ASME B18.5 and SAE J429 Grade 5 specifications, ensuring consistent performance in heavy-duty applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe use in regulated industries.
