S-92356A147 3/8"-16 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 and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Secure anti-rotation design featuring a square neck that prevents spinning during installation and ensures stable fastening
• Wide-rounded head profile provides enhanced bearing surface and reduces the risk of surface damage or pull-through
• Coarse UNC threading (3/8"-16) offers faster installation and better performance in softer materials or where vibration is a concern
• Full threading and right-hand direction enable maximum grip length and standard tool compatibility for efficient assembly
• Comprehensive compliance with ASME B18.5, RoHS 3, and REACH ensures quality, safety, and environmental responsibility

Professional Applications & Engineering Value

This 3/8"-16 UNC Carriage Bolt in 18-8 Stainless Steel is engineered to address common industrial challenges such as corrosion, vibration loosening, and structural integrity. The square neck design locks securely into pre-drilled holes, eliminating rotation during torque application—critical in wood-to-metal connections, construction frameworks, and machinery assembly. Its fully threaded coarse UNC thread ensures rapid installation and strong holding power in wood, plastic, or soft metals, while the wide-rounded head distributes clamping force evenly to prevent surface indentation. With 70,000 psi tensile strength and Rockwell B55 hardness, it withstands heavy loads and repetitive stress in agricultural equipment, trailer manufacturing, and structural supports, providing long-term reliability in demanding environments.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and adheres to UNC coarse thread standards (3/8"-16) for consistent performance. Manufactured in compliance with ASME B18.5 specifications, it ensures dimensional accuracy and interchangeability. The product is confirmed RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.