S-90185A222 1/4"-20 x 5 1/2" ASME B18.5, SAE J429 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Exceptional anti-rotation performance thanks to the integrated square neck that prevents spinning during installation
- High-strength Grade 5 rating delivering 120,000 psi tensile strength for heavy-duty applications
- Reliable coarse thread engagement with UNC Class 3A threads ensuring precise, vibration-resistant connections
- Optimized head design featuring a wide, rounded carriage head for enhanced bearing surface and professional appearance
- Full-threaded convenience allowing for maximum adjustability and secure fastening through various material thicknesses
- Rockwell C25 hardness providing excellent durability and resistance to deformation under load
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt delivers exceptional engineering value in industrial fastening applications where vibration resistance and corrosion protection are critical. The square neck carriage bolt design eliminates the need for additional anti-rotation components, providing secure locking in wood-to-metal and structural connections. The UNC coarse thread ensures quick installation and reliable performance in agricultural equipment, trailer assemblies, and construction frameworks. With fully threaded design and Rockwell C25 hardness, this fastener maintains integrity under dynamic loads while the zinc plating protects against environmental degradation in outdoor and industrial settings.
Specification Summary & Compliance
This carriage bolt features precise 1/4"-20 UNC coarse threads with Class 3A fit for superior thread engagement and meets ASME B18.5 and SAE J429 Grade 5 specifications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial applications while maintaining dimensional accuracy and mechanical properties as specified.
