S-92356A657 3/8"-16 x 9" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Secure anti-rotation design featuring a square neck that prevents spinning during installation and ensures stable fastening
• Optimized threading efficiency with 3/8"-16 UNC coarse threads and Class 2A fit for quick assembly and vibration resistance
• Enhanced durability in demanding applications due to partial threading that concentrates strength where needed most
• Regulatory compliance assurance meeting ASME B18.5 standards and RoHS 3/REACH environmental regulations
• Versatile industrial suitability with a 9" length and wide rounded head for structural and heavy-duty fastening needs

Professional Applications & Engineering Value

This carriage bolt delivers critical engineering solutions for industrial and construction applications where vibration resistance, corrosion protection, and structural integrity are paramount. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, making it suitable for outdoor structures, marine environments, and food processing facilities. The square neck design securely locks into materials during installation, preventing rotation and reducing assembly time—especially valuable in wood-to-metal and structural steel connections. With partial threading and UNC coarse threads, it maintains high clamp force in dynamic load conditions while the Class 2A thread fit ensures compatibility with standard nuts. These features collectively address common challenges of joint failure, corrosion-induced degradation, and installation inefficiency in heavy machinery, trailer manufacturing, and architectural frameworks.

Specification Summary & Compliance

This carriage bolt maintains precise dimensional accuracy with Class 2A thread fit and UNC coarse threading (3/8"-16) per standardized manufacturing practices. It fully complies with ASME B18.5 specifications for dimensional and mechanical requirements. The product is certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for hazardous substances. Manufactured from 18-8 Stainless Steel with consistent Rockwell B55 hardness and 70,000 psi tensile strength, it meets rigorous industrial standards for reliability and performance.