S-92356A644 3/8"-16 x 5" ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress.
• Effective anti-rotation locking provided by the integrated square neck, preventing bolt spin during installation and in vibrating machinery.
• Wide bearing surface from the rounded carriage head design, distributing clamping force evenly and reducing surface damage.
• Easy and quick installation with coarse UNC threading and fully threaded shank, allowing for rapid assembly in various materials.
• Precise thread fit with Class 2A tolerance ensuring smooth engagement and consistent performance in repetitive use.
• Regulatory compliance assurance meeting ASME B18.5 manufacturing standards, RoHS 3, and REACH for global market acceptance.

Professional Applications & Engineering Value

This 3/8"-16 UNC carriage bolt is engineered to address common industrial fastening challenges, such as joint loosening under vibration and corrosion in demanding environments. The 18-8 stainless steel material provides excellent resistance to rust and chemical exposure, making it suitable for construction, agricultural equipment, and marine applications. Its square neck design securely locks into pre-drilled holes, eliminating rotation during nut tightening and ensuring stable connections in machinery and structural frameworks. The fully threaded coarse UNC thread allows for deep penetration and strong holding power in wood, metal, and composite materials, while the rounded head offers a clean finish and reduces snagging risks. This bolt delivers reliable, long-term performance where durability and safety are critical.

Specification Summary & Compliance

This carriage bolt features a 5" length and 3/8"-16 UNC coarse thread with a Class 2A thread fit for precise dimensional accuracy. It complies with ASME B18.5 standards for consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for hazardous substances.