S-93604A755 5/8"-11 x 2 1/2" 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 and high-moisture environments
• Enhanced anti-rotation performance due to the integrated square neck design that prevents spinning during installation
• High tensile strength of 60,000 psi and Grade 2 classification for reliable load-bearing in demanding applications
• Excellent thread engagement with fully threaded UNC coarse spacing, ensuring faster assembly and secure fastening
• Precise dimensional accuracy with Class 2A thread fit, providing consistent performance and compatibility
• Durable material hardness rated at Rockwell B70, offering long-term wear resistance and structural integrity
• Broad regulatory compliance including ASTM, ASME, RoHS 3, and REACH, ensuring safety and environmental standards

Professional Applications & Engineering Value

This hot-dipped galvanized steel carriage bolt is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress fatigue. The square neck design locks securely into materials, preventing rotation during torque application—making it ideal for wood-to-metal connections in construction, agricultural machinery, and transportation equipment. Its Grade 2 strength and 60,000 psi tensile capacity provide reliable performance in structural frameworks, while the UNC coarse threading ensures quick installation and resistance to cross-threading. The hot-dipped galvanization offers a thick, uniform coating that withstands harsh weather and chemical exposure, extending service life in outdoor or corrosive environments like marine and infrastructure projects.

Specification Summary & Compliance

This carriage bolt features a 5/8"-11 UNC thread with Class 2A fit for precise dimensional tolerance, ensuring consistent thread engagement. It complies with manufacturing standards including ASTM A307 (carbon steel bolts), ASTM A153 (galvanized coating), and ASME B18.5 (dimensional specifications). The product is also certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for hazardous substance restrictions.