S-93604A743 1/2"-13 x 12" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor and harsh industrial environments
• Superior anti-rotation performance due to the square neck design, preventing bolt spinning during installation and use
• Reliable load-bearing capacity with Grade 2 strength rating and 60,000 psi tensile strength for heavy-duty applications
• Optimized thread engagement with coarse UNC threading and Class 2A fit, ensuring easy installation and secure fastening
• Enhanced durability from Rockwell B70 hardness, providing excellent resistance to wear and deformation
• Versatile partial threading allowing flexibility in clamping range while maintaining unthreaded shank strength
• Full regulatory compliance meeting ASTM A307, ASME B18.5 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This hot-dipped galvanized steel carriage bolt delivers exceptional engineering value in demanding applications where corrosion resistance and anti-rotation performance are critical. The heavy-duty 12-inch length combined with Grade 2 strength rating makes it ideal for structural connections in construction, agricultural equipment, and industrial machinery. The square neck design effectively prevents rotation during tightening, eliminating the need for secondary locking mechanisms and reducing installation time. The coarse UNC threading with Class 2A fit ensures reliable performance in wood-to-metal and metal-to-metal applications, while the partial threading provides optimal stress distribution. The hot-dipped galvanized coating offers superior protection against rust and corrosion in outdoor environments, extending service life and reducing maintenance costs across various industrial sectors.

Specification Summary & Compliance

This carriage bolt features precision 1/2"-13 UNC coarse threading with Class 2A thread fit and minimum 6-inch thread length. Manufactured to meet ASTM A307 and ASME B18.5 specifications, ensuring dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict regulatory adherence.