S-90185A255 1/2"-13 x 15" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments
• Exceptional load-bearing capacity with Grade 5 strength rating and 120,000 psi tensile strength for heavy-duty applications
• Secure anti-rotation performance through integrated square neck design that prevents spinning during installation
• Optimized thread engagement with Class 3A thread fit and UNC coarse threading for reliable fastening in structural assemblies
• Enhanced durability with Rockwell C25 hardness rating, maintaining structural integrity under repeated stress
• Simplified installation through partially threaded design that allows for precise clamp load control
• Regulatory compliance assurance meeting ASME B18.5 standards for consistent quality and performance

Professional Applications & Engineering Value

This heavy-duty carriage bolt delivers critical engineering solutions for industrial fastening challenges where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, agricultural machinery, and construction applications exposed to environmental elements. The square neck design fundamentally prevents rotation during torque application, eliminating the need for secondary locking mechanisms in wood-to-metal and structural steel connections. With 1/2"-13 UNC coarse threading and Class 3A thread fit, this fastener ensures reliable engagement in both soft and hard materials, while the Grade 5 strength rating (120,000 psi tensile strength) supports demanding load requirements in trailer manufacturing, bridge construction, and heavy equipment assembly where failure is not an option.

Specification Summary & Compliance

This carriage bolt features precision UNC coarse threading with Class 3A thread fit and 1/2"-13 thread size, manufactured to exacting ASME B18.5 standards SAE J429. The fastener maintains dimensional accuracy with 0.5" screw diameter and 15" length, incorporating a square neck measuring 0.52" width and 0.28" length for secure anti-rotation performance. Compliance certifications include RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental regulatory adherence for global industrial applications.