S-92356A313 3/8"-16 x 4 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 and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty load bearing
• Reliable anti-rotation performance thanks to the integrated square neck design that prevents spinning during installation
• Wide rounded head profile provides superior load distribution and reduces surface damage
• Precision UNC coarse threading with Class 2A fit ensures easy installation and secure fastening in various materials
• Full thread coverage along the 4-1/4" length offers maximum engagement and adjustment flexibility
• Regulatory compliance meets ASME B18.5 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 3/8"-16 UNC carriage bolt delivers exceptional engineering value for demanding industrial applications where vibration resistance and long-term reliability are critical. The 18-8 stainless steel composition provides excellent corrosion resistance, making it suitable for outdoor structures, marine environments, and chemical processing facilities. The integrated square neck design effectively prevents rotation during tightening, eliminating the need for additional locking mechanisms and reducing installation time. With its coarse threading and Class 2A thread fit, this fully threaded carriage bolt ensures quick assembly and secure fastening in wood, metal, and composite materials. The combination of 70,000 psi tensile strength and Rockwell B55 hardness provides reliable performance in structural applications, construction projects, and heavy equipment where mechanical stress and environmental factors challenge fastener integrity.

Specification Summary & Compliance

This carriage bolt features precision 3/8"-16 UNC coarse threading with Class 2A thread fit for consistent engagement and reliable performance. Manufacturing and dimensional specifications strictly comply with ASME B18.5 standards, ensuring interchangeability and proper function. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial markets and environmentally conscious applications.