S-90185A416 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 demanding industrial applications
- Superior corrosion resistance with zinc-plated steel construction for extended service life in harsh environments
- Enhanced anti-rotation performance through square neck design that prevents bolt turning during installation
- Precision threading with Class 3A UNC coarse threads provides superior fit and vibration resistance
- Optimized hardness rating of Rockwell C25 delivers excellent durability and wear resistance
- Wide rounded head profile offers superior load distribution and prevents pull-through
- Full compliance with industry standards including ASME B18.5 and SAE J429 for guaranteed quality and reliability
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt delivers exceptional engineering value through its robust construction and precision engineering. The square neck design solves critical anti-rotation challenges in structural applications, preventing bolt spinning during torque application and ensuring secure fastening. The zinc-plated steel construction provides superior corrosion protection for outdoor equipment, agricultural machinery, and industrial structures exposed to environmental elements. With 120,000 psi tensile strength and Rockwell C25 hardness, this 5/16"-18 UNC threaded fastener maintains integrity under heavy loads and vibration, making it ideal for construction frameworks, trailer assemblies, and heavy equipment where reliable fastening solutions are paramount. The fully threaded configuration allows for maximum engagement depth and uniform stress distribution.
Specification Summary & Compliance
This carriage bolt features precision 5/16"-18 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy and engagement. Manufactured to Grade 5 standards with 120,000 psi tensile strength and Rockwell C25 hardness. Fully compliant with ASME B18.5 and SAE J429 specifications. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards for safe and sustainable industrial use.
