S-92356A174 3/8"-16 x 14" 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 long-term outdoor use
• Enhanced anti-rotation performance from the square neck design, preventing bolt spin during installation and ensuring secure fastening
• High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding structural applications
• Optimized thread engagement with Class 2A fit and UNC coarse threading, enabling faster assembly and reduced cross-threading risk
• Durable Rockwell B55 hardness maintains structural integrity under vibration and mechanical stress
• Wide rounded carriage head offers a larger bearing surface for improved load distribution and a finished appearance
• Environmental and regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 3/8"-16 UNC carriage bolt delivers critical engineering advantages in heavy-duty fastening scenarios. The 18-8 Stainless Steel material provides inherent corrosion resistance, eliminating premature failure in moisture-rich or chemically aggressive environments like marine hardware, agricultural equipment, and structural frameworks. The square neck mechanically locks into materials, preventing rotation during nut tightening—a common pain point in wood-to-metal and timber construction applications. With a partially threaded design, the bolt concentrates clamping force precisely where needed, while the UNC coarse thread ensures rapid installation in soft materials and reduces galling. These features make it indispensable for industrial machinery, trailer manufacturing, and infrastructure projects requiring durable, vibration-resistant connections.

Specification Summary & Compliance

This carriage bolt meets ASME B18.5 dimensional standards, ensuring interchangeability and consistent performance. Thread specifications include 3/8"-16 UNC coarse thread with Class 2A thread fit for reliable assembly tolerance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global supply chains and environmentally conscious manufacturing.