S-93604A757 5/8"-11 x 3" ASTM A307, ASTM A153, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with hot-dipped galvanized steel coating, ideal for outdoor or harsh industrial environments.
• Excellent anti-rotation performance due to the square neck design, preventing loosening under vibration and stress.
• High tensile strength of 60,000 psi and Grade 2 classification ensures reliable load-bearing capacity for heavy-duty applications.
• Easy and quick installation with fully threaded UNC coarse threads and right-hand direction, reducing assembly time.
• Wide-rounded head profile provides a larger bearing surface for secure fastening and reduced risk of pull-through.
• Consistent dimensional accuracy with Class 2A thread fit, ensuring compatibility and smooth engagement with nuts.
• Durable material hardness at Rockwell B70, offering long-term wear resistance and structural integrity.

Professional Applications & Engineering Value

This hot-dipped galvanized steel carriage bolt is engineered to address common industrial challenges such as corrosion, vibration-induced loosening, and high-stress demands. The square neck integrates seamlessly into pre-drilled materials, locking securely to prevent rotation during tightening—ideal for wood-to-metal connections, structural framing, and machinery assemblies. With UNC coarse threading and full threading along the 3" length, it ensures rapid installation and uniform load distribution. The Grade 2 strength and robust 60,000 psi tensile strength make it suitable for construction, agricultural equipment, and transportation infrastructure, where durability and compliance with standards like ASTM A307 are critical for safety and longevity.

Specification Summary & Compliance

This carriage bolt adheres to precise dimensional standards, including a Class 2A thread fit for consistent tolerance and UNC coarse thread type (5/8"-11). It meets manufacturing specifications per ASTM A307 and ASME B18.5, ensuring reliability in industrial fastening. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global markets.