S-90185A423 5/16"-18 x 5" 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, ideal for outdoor and industrial environments
- Exceptional load-bearing capacity with 120,000 PSI tensile strength and Grade 5 classification for heavy-duty applications
- Secure anti-rotation design featuring a square neck that prevents spinning during installation
- Precision threading with UNC coarse spacing and Class 3A fit ensures reliable, vibration-resistant connections
- Enhanced durability backed by Rockwell C25 hardness for long-term performance under stress
- Broad compatibility with fully threaded right-hand design for versatile use across various assemblies
- Regulatory compliance meeting ASME B18.5 and SAE J429 standards, plus RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt is engineered to address critical challenges in structural and machinery applications. The square neck design effectively counters rotation during tightening, eliminating the need for secondary locking mechanisms and speeding up assembly in frameworks, trailers, and agricultural equipment. Its UNC coarse threading and Class 3A fit provide excellent grip in wood, metal, and composite materials, reducing the risk of thread stripping under dynamic loads. With a 120,000 PSI tensile strength and corrosion-resistant zinc plating, it delivers reliable performance in demanding environments, from construction sites to manufacturing plants, ensuring joint integrity and reducing maintenance frequency.
Specification Summary & Compliance
This carriage bolt adheres to precise dimensional standards, including a 5/16"-18 UNC thread size with coarse spacing and Class 3A thread fit for superior tolerance control. Manufacturing complies with ASME B18.5 and SAE J429 specifications, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substance restrictions.
