S-92356A116 5/16"-18 x 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 environments and outdoor applications
• Exceptional holding power with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
• Effective anti-rotation performance due to the integrated square neck, preventing bolt spin during installation and use
• Wide bearing surface from the rounded carriage head design, distributing load evenly and minimizing surface damage
• Quick and easy installation with coarse UNC threading and fully threaded right-hand design for faster assembly in various materials
• Precise fit and interchangeability ensured by Class 2A thread fit and adherence to ASME B18.5 dimensional standards
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for regulated industries

Professional Applications & Engineering Value

This 5/16"-18 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 ideal for outdoor structures, marine environments, and food processing equipment where moisture is a concern. The square neck design securely locks into place during installation, preventing rotation when tightening nuts—a common issue in wood-to-metal and framing applications. With its coarse thread and fully threaded body, it offers superior pull-out resistance in soft materials like wood and plastic, while the rounded head sits flush without snagging. These features combine to deliver reliable performance in construction, agricultural machinery, and transportation equipment where vibration resistance and durability are paramount.

Specification Summary & Compliance

This carriage bolt features a 5/16"-18 UNC coarse thread with Class 2A fit for standard tolerance and easy assembly. It meets ASME B18.5 specifications for dimensional accuracy and manufacturing quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in regulated markets.