S-93548A628 3/8"-16 x 1 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
- Exceptional anti-rotation performance thanks to the square neck design that prevents spinning during installation
- High tensile strength rating of 60,000 PSI ensures reliable performance in heavy-duty applications
- Optimized thread engagement with UNC coarse spacing and Class 2A fit for faster assembly and secure fastening
- Wide bearing surface from the rounded carriage head distributes load effectively, reducing surface damage
- Full threading capability provides maximum adjustment flexibility and grip length
- Industry compliance assurance meeting multiple standards for quality and environmental regulations
Professional Applications & Engineering Value
These Grade 2 zinc-plated steel carriage bolts deliver critical engineering solutions where vibration resistance and structural integrity are paramount. The square neck design fundamentally addresses the common industrial challenge of fastener rotation during torque application, making them ideal for wood-to-metal connections in construction, trailer assemblies, and agricultural equipment. The UNC coarse thread spacing ensures rapid installation in soft materials while maintaining strong holding power. With 60,000 PSI tensile strength and Rockwell B70 hardness, these bolts withstand substantial mechanical stress in heavy machinery, structural frameworks, and outdoor applications where environmental exposure demands the corrosion protection of zinc plating.
Specification Summary & Compliance
This carriage bolt features precision 3/8"-16 UNC coarse threads with Class 2A thread fit for consistent dimensional accuracy. Manufacturing complies with ASTM A307, SAE J429 Grade 2, and ASME B18.5 specifications, ensuring standardized quality and performance. The product is RoHS 3 (2015/863/EU) Compliant, meeting environmental regulations for hazardous substance restrictions.
