S-92356A646 3/8"-16 x 5 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 long-term outdoor use.
• Exceptional mechanical strength offering a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable performance under heavy loads.
• Effective anti-rotation locking provided by the integrated square neck, preventing the bolt from spinning during installation and use.
• Wide bearing surface from the rounded carriage head design distributes load evenly, reducing surface damage and improving joint integrity.
• Easy and quick installation with fully threaded UNC coarse spacing and right-hand direction, suitable for efficient assembly in various materials.
• Precise dimensional compliance with Class 2A thread fit and ASME B18.5 standards, ensuring consistent quality and interchangeability.
• Environmental and safety compliance meeting RoHS 3 and REACH regulations, making it safe for diverse industrial applications.

Professional Applications & Engineering Value

This 3/8"-16 UNC carriage bolt is engineered to address common industrial fastening challenges, such as vibration loosening and material degradation. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it ideal for construction, agricultural machinery, and marine environments where exposure to moisture and chemicals is frequent. The square neck design securely locks into materials, eliminating the need for additional tools to prevent rotation during tightening—this is crucial for structural assemblies and wooden frameworks. With its fully threaded coarse spacing and high tensile strength, it ensures a robust and durable connection in heavy-duty applications, reducing maintenance needs and enhancing operational safety. This bolt is a reliable choice for engineers and procurement specialists seeking long-lasting, compliant fasteners that meet stringent ASME B18.5 standards.

Specification Summary & Compliance

This carriage bolt features precise dimensions including a 5-1/2" length, 3/8"-16 UNC coarse thread with Class 2A thread fit for consistent assembly. It complies with ASME B18.5 manufacturing specifications, ensuring high quality and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, supporting environmental safety and regulatory adherence in industrial and construction sectors.