S-93548A642 3/8"-16 x 4 1/2" 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 corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Reliable anti-rotation performance through integrated square neck design that prevents spinning during installation
- Heavy-duty load capacity with 60,000 PSI tensile strength and Grade 2 classification for structural applications
- Optimized thread engagement with UNC coarse threading providing faster assembly and reduced cross-threading risk
- Enhanced material durability featuring Rockwell B70 hardness for resistance to deformation under stress
- Broad compatibility with Class 2A thread fit ensuring proper mating with standard nuts and components
- Comprehensive regulatory compliance meeting ASTM A307, SAE J429, ASME B18.5 standards and RoHS 3 environmental directives
Professional Applications & Engineering Value
This 3/8"-16 carriage bolt delivers exceptional engineering value for construction and industrial applications where vibration resistance and structural integrity are critical. The zinc-plated steel construction provides essential corrosion protection for outdoor structures, equipment frames, and building assemblies. The integrated square neck design solves the common problem of fastener rotation during tightening, ensuring secure placement in wood, metal, and composite materials. With fully threaded UNC coarse pattern and Class 2A thread fit, these bolts offer reliable performance in high-vibration environments while maintaining easy installation. The combination of 60,000 PSI tensile strength and Rockwell B70 hardness makes these fasteners ideal for load-bearing applications where durability and consistent performance are non-negotiable requirements.
Specification Summary & Compliance
This carriage bolt features precision Class 2A thread fit with UNC coarse threading (3/8"-16) and right-hand thread direction. Manufacturing complies with ASTM A307, SAE J429 Grade 2, and ASME B18.5 specifications for dimensional accuracy and performance standards. The product is RoHS 3 (2015/863/EU) Compliant, ensuring environmental responsibility while delivering reliable mechanical properties including 60,000 PSI tensile strength and Rockwell B70 hardness for industrial-grade applications.
