S-93604A635 1/4"-20 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.
- High tensile strength of 60,000 PSI ensures reliable performance in heavy-duty applications without failure.
- Rockwell B70 hardness provides excellent durability and resistance to wear and deformation over time.
- Square neck design prevents rotation during installation, offering secure and stable fastening in wood or metal assemblies.
- Fully threaded UNC coarse spacing allows for easy and quick installation with Class 2A thread fit for consistent engagement.
- Rounded head profile reduces snagging risks and provides a smooth finish for safer handling in various settings.
- Compliance with ASTM A307, ASTM A153, and ASME B18.5 standards guarantees quality and interoperability in professional projects.
Professional Applications & Engineering Value
This hot-dipped galvanized steel carriage bolt is engineered to address common industrial challenges, such as corrosion in outdoor structures and the need for robust, long-lasting fasteners. The Grade 2 material and UNC coarse thread with Class 2A fit ensure precise alignment and resistance to loosening under vibration, making it ideal for construction, agricultural equipment, and machinery assemblies. The square neck locks securely into materials, preventing spin-out during torque application, while the fully threaded design allows for adjustable grip length. With a tensile strength of 60,000 PSI and enhanced surface protection, it delivers reliable performance in demanding environments, reducing maintenance costs and downtime.
Specification Summary & Compliance
This carriage bolt features precise dimensions, including a 1/4"-20 UNC thread size with coarse spacing and Class 2A thread fit for standard tolerance. It complies with ASTM A307, ASTM A153, and ASME B18.5 manufacturing specifications, ensuring consistent quality. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for industrial use.
