S-92356A156 1/2"-13 x 3 1/4" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments like marine and outdoor applications
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Secure anti-rotation locking provided by the integrated square neck design, preventing bolt spin during installation and use
• Wide rounded head profile ensures even load distribution and reduces surface damage in wood and metal assemblies
• Precision coarse threading (1/2"-13 UNC) with Class 2A fit enables faster installation and superior vibration resistance
• Full thread coverage along the 3-1/4" length allows flexible positioning and consistent clamping force
• Regulatory compliance assurance meeting ASME B18.5 standards, RoHS 3, and REACH for global industrial acceptance

Professional Applications & Engineering Value

Engineered for demanding industrial fastening scenarios, this carriage bolt delivers critical performance where vibration resistance and material integrity are paramount. The 18-8 Stainless Steel composition provides inherent corrosion resistance, eliminating premature failure in humid, chemical, or marine environments. Its square neck mechanically locks into assembled materials, preventing rotation during torque application—a crucial advantage in wood-to-metal connections and structural frameworks. The coarse UNC threading ensures rapid installation in soft materials and maintains grip under dynamic loads, while the rounded head minimizes surface marring. These features make it indispensable for construction equipment, transportation infrastructure, and marine hardware where reliability cannot be compromised.

Specification Summary & Compliance

This carriage bolt maintains Class 2A thread fit tolerances per UNC standards with a precise 1/2"-13 thread configuration. Manufacturing strictly follows ASME B18.5 dimensional specifications, ensuring interchangeability and consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and unrestricted use in international markets. All dimensions—including the 1.094" head diameter, 0.27" head height, and 0.52" square neck—conform to industrial standards for reliable integration into existing assemblies.