S-90185A838 5/8"-11 x 6" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Exceptional load-bearing capacity with 120,000 psi tensile strength and Grade 5 classification for heavy-duty applications
• Reliable anti-rotation performance through integrated square neck design that prevents spinning during installation
• Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
• Enhanced durability with Rockwell C25 hardness that maintains structural integrity under repeated stress
• Versatile full-thread design allowing installation at any point along the 6" length for flexible positioning
• Industry-standard compliance meeting ASME B18.5 and SAE J429 specifications for guaranteed performance

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt delivers critical engineering solutions for industrial applications where vibration resistance and structural integrity are paramount. The combination of 120,000 psi tensile strength and Rockwell C25 hardness ensures reliable performance in heavy machinery, construction frameworks, and transportation equipment. The square neck design provides essential anti-rotation capability, eliminating the need for secondary locking mechanisms and reducing installation time. The UNC coarse threading with Class 2A fit offers superior engagement in wood, metal, and composite materials, while the zinc plating provides essential corrosion protection for outdoor and high-moisture environments. This fully threaded carriage bolt enables flexible positioning in structural connections, agricultural equipment, and industrial assembly applications where reliability cannot be compromised.

Specification Summary & Compliance

This carriage bolt features precision 5/8"-11 UNC coarse threading with Class 2A thread fit ensuring proper clearance and engagement. Manufactured to ASME B18.5 and SAE J429 Grade 5 specifications, it delivers consistent dimensional accuracy and mechanical properties. 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 with strict material restrictions.