S-93604A663 5/16"-18 x 5 1/2" ASTM A307, ASTM A153, 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 hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments.
- Enhanced anti-rotation performance due to the square neck design, preventing loosening under vibration and dynamic loads.
- High tensile strength of 60,000 PSI ensures reliable load-bearing capacity for structural and heavy-duty applications.
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
- Coarse UNC threading with Class 2A fit allows for quick assembly and secure fastening in various materials.
- Full threading along the 5-1/2" length offers versatile installation options and consistent grip across the entire bolt.
- Compliance with ASTM A307, ASTM A153, and ASME B18.5 standards guarantees consistent quality and engineering reliability.
Professional Applications & Engineering Value
This hot-dipped galvanized steel carriage bolt is engineered to address common industrial challenges such as corrosion, vibration-induced loosening, and structural integrity. The Grade 2 material combined with a fully threaded UNC coarse thread design ensures robust performance in demanding environments like construction, agricultural machinery, and transportation equipment. The square neck securely locks into wood or metal, eliminating the need for additional anti-rotation components and reducing installation time. Its 60,000 PSI tensile strength and Rockwell B70 hardness make it suitable for heavy-duty fastening where durability and long-term reliability are critical, while the galvanized coating provides lasting protection against rust and environmental degradation.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit and adheres to UNC coarse thread standards for consistent performance. It meets manufacturing specifications including ASTM A307, ASTM A153, and ASME B18.5, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and environmentally responsible industrial use.
