S-93180A372 5/16"-18 x 4 1/2" 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 in harsh environments thanks to 316 stainless steel construction
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
- Secure anti-rotation locking provided by the square neck design, preventing spin-out during installation
- Wide application compatibility with the 5/16"-18 UNC coarse thread and Class 2A fit for easy assembly
- Full-threaded right-hand design ensures maximum grip length and versatile fastening options
- Rounded head profile offers a finished appearance and reduces snagging risks in industrial settings
- Regulatory compliance with ASME B18.5, RoHS 3, and REACH for guaranteed quality and environmental safety
Professional Applications & Engineering Value
This 316 Stainless Steel Carriage Bolt is engineered to solve critical fastening challenges in demanding industrial environments. The marine-grade 316 stainless steel provides outstanding resistance to corrosion from chemicals, saltwater, and extreme weather, making it ideal for marine equipment, chemical processing plants, and outdoor structures. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures durability under high stress, while the square neck securely locks into materials to prevent rotation during torque application. The fully threaded UNC coarse thread design allows for deep penetration and strong holding power in wood, metal, and composite materials, providing reliable performance in construction, transportation, and heavy machinery applications where vibration resistance and long-term integrity are paramount.
Specification Summary & Compliance
This carriage bolt features precision 5/16"-18 UNC coarse threading with Class 2A thread fit for consistent engagement and ease of assembly. Manufactured in compliance with ASME B18.5 standards for dimensional accuracy and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial use.
