S-92356A812 5/8"-11 x 4 1/2" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads.
• Effective anti-rotation locking provided by the integrated square neck, preventing spin-out during installation and ensuring a secure fit.
• Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and reduced cross-threading risk.
• Enhanced durability and longevity from the rounded carriage head design, which distributes load and resists pull-through in wood and metal.
• Regulatory compliance assurance meeting ASME B18.5 standards, RoHS 3, and REACH for safe, reliable use in regulated industries.
• Versatile partial threading allowing for unthreaded shank sections to bear shear loads without compromising thread integrity.

Professional Applications & Engineering Value

This 5/8"-11 UNC carriage bolt is engineered to solve critical fastening challenges in demanding industrial applications. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for construction, agricultural machinery, and marine environments where exposure to moisture is common. The square neck design is a key engineering feature that locks securely into materials, preventing rotation during torque application and eliminating the need for additional locking washers. With its partially threaded shank and coarse thread spacing, it ensures quick installation in wood, metal framing, and structural assemblies, reducing labor time while maintaining a 70,000 psi tensile strength for heavy-duty load-bearing requirements. This bolt delivers reliable performance in trailer beds, fencing, and equipment frames where vibration resistance and long-term integrity are paramount.

Specification Summary & Compliance

This carriage bolt features a 5/8"-11 UNC thread with Class 2A fit for standard dimensional accuracy and easy assembly. It is manufactured in compliance with ASME B18.5 specifications, ensuring consistent quality and interchangeability. The product is confirmed RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.