S-90185A254 1/2"-13 x 10" 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
• Secure anti-rotation installation through integrated square neck design that prevents spinning during tightening
• Optimized thread engagement with UNC coarse threading and Class 3A fit ensuring reliable fastening in various materials
• Enhanced durability with Rockwell C25 hardness providing excellent resistance to wear and deformation
• Regulatory compliance assurance meeting ASME B18.5, SAE J429 standards plus RoHS 3 and REACH environmental directives
• Versatile partial threading allowing unthreaded shank portion for precise clamping and shear strength requirements

Professional Applications & Engineering Value

This Grade 5 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. The distinctive square neck carriage bolt design eliminates rotation during installation, making it ideal for wood-to-metal connections and structural framing where access is limited to one side. The UNC coarse thread configuration ensures rapid installation in various materials while the partial threading allows the unthreaded portion to act as a precision shoulder in assembled components. With its 120,000 psi tensile strength, this fastener maintains clamping force under dynamic loads and thermal cycling, preventing joint failure in heavy machinery, trailer assemblies, and structural steel connections.

Specification Summary & Compliance

This carriage bolt maintains precise dimensional accuracy with Class 3A thread fit per UNC standards, ensuring consistent performance across industrial applications. Manufacturing compliance includes ASME B18.5 and SAE J429 Grade 5 specifications for material quality and mechanical properties. Environmental regulatory adherence is confirmed through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, meeting current substance restriction requirements for industrial and international markets.