S-90185A228 5/16"-18 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 harsh environments
- Exceptional load-bearing capacity with 120,000 PSI tensile strength to withstand heavy-duty applications
- Precise square neck design prevents rotation during installation for secure, reliable fastening
- Class 3A thread fit ensures tight tolerances and superior engagement with mating components
- Full UNC coarse threading provides faster installation and superior vibration resistance
- Grade 5 classification guarantees consistent mechanical properties and reliable performance
- Wide rounded head profile offers excellent bearing surface and professional finished appearance
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers exceptional engineering value in demanding industrial applications where vibration resistance and structural integrity are paramount. The zinc-plated steel construction provides reliable corrosion protection for outdoor equipment, agricultural machinery, and construction applications. The square neck design effectively prevents rotation during torque application, ensuring secure fastening in wood-to-metal and structural steel connections. With 120,000 PSI tensile strength and Rockwell C25 hardness, this fully threaded UNC coarse thread fastener maintains integrity under extreme loads, making it ideal for trailer assemblies, heavy equipment maintenance, and industrial framing systems where reliability cannot be compromised.
Specification Summary & Compliance
This carriage bolt features precision 5/16"-18 UNC coarse threading with Class 3A thread fit for superior dimensional accuracy. Manufactured to meet ASME B18.5 and SAE J429 specifications for Grade 5 fasteners, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict regulatory adherence.
