S-90185A168 5/16"-18 x 5/8" 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance in heavy-duty applications and high-stress environments.
- Superior corrosion resistance provided by zinc-flake coating extends service life and reduces maintenance costs in harsh industrial conditions.
- Effective anti-rotation locking through the integrated square neck design prevents bolt spinning during installation and under vibration.
- Optimized thread engagement with UNC coarse spacing and Class 2A thread fit enables faster assembly and secure fastening.
- Enhanced durability from Rockwell C25 hardness maintains structural integrity and resistance to wear over time.
- Industry-standard compliance with ASME B18.5 and SAE J429 guarantees consistent quality and interchangeability.
- Environmental responsibility through RoHS 3 and REACH compliance ensures safe use in regulated markets and applications.
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers critical engineering solutions where vibration resistance and structural reliability are paramount. The zinc-flake coated steel construction provides robust protection against corrosion in outdoor equipment, agricultural machinery, and construction frameworks. Its square neck design effectively counters rotational forces, making it ideal for wood-to-metal connections, trailer assemblies, and structural steel applications where loosening could compromise safety. The fully threaded UNC coarse spacing ensures rapid installation and superior grip in soft materials, while the 120,000 psi tensile strength handles dynamic loads in industrial fastening systems. Engineered to meet rigorous standards, this bolt maintains performance in demanding environments from manufacturing plants to infrastructure projects.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit with 5/16"-18 UNC coarse thread specifications, ensuring dimensional accuracy and compatibility. Manufacturing follows ASME B18.5 and SAE J429 Grade 5 standards for consistent quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications.
