S-93548A592 5/16"-18 x 2 1/4" 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 securely locks into materials, preventing spin during installation and under vibration.
- Excellent corrosion resistance thanks to zinc-plated steel construction, ensuring long-term durability in various industrial environments.
- Reliable strength for general purpose applications with Grade 2 classification and 60,000 PSI tensile strength, providing dependable holding power.
- Easy installation and compatibility with coarse UNC threading and Class 2A fit, allowing for quick assembly and broad tool compatibility.
- Enhanced material hardness rated at Rockwell B70, offering good resistance to wear and deformation under load.
- Full threading versatility enabling use across the entire bolt length for adjustable fastening in diverse material thicknesses.
- Compliance with major industry standards including ASTM A307, SAE J429, and ASME B18.5, ensuring consistent quality and engineering reliability.
Professional Applications & Engineering Value
This zinc-plated steel carriage bolt is engineered to address common industrial fastening challenges, such as loosening under dynamic loads and corrosion in harsh environments. The square neck design provides exceptional anti-rotation, making it ideal for wood-to-metal connections, structural framing, and machinery where vibration resistance is critical. With a coarse UNC thread and Class 2A fit, it ensures easy installation and reliable performance in construction, agricultural equipment, and transportation applications. The Grade 2 strength and full threading offer versatility for heavy-duty assemblies, while the zinc plating extends service life by resisting rust, reducing maintenance costs and downtime in demanding settings.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent engagement. Manufacturing complies with ASTM A307, SAE J429, and ASME B18.5 specifications, ensuring dimensional accuracy and performance reliability. It is RoHS 3 (2015/863/EU) compliant, confirming the absence of hazardous substances for safe use in regulated industries.
