S-90185A112 5/16"-18 x 1 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 black-oxide steel coating for extended service life in demanding environments
- Exceptional mechanical strength with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Anti-rotation security through integrated square neck design that prevents spinning during installation
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and reliable connections
- Full-threaded convenience allowing installation flexibility and maximum grip length throughout the fastener
- Industry-standard compliance meeting ASME B18.5 specifications for consistent performance and interchangeability
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable procurement
Professional Applications & Engineering Value
These Grade 5 carriage bolts with black-oxide steel construction deliver critical performance in structural and mechanical assemblies where vibration resistance and durability are paramount. The square neck design eliminates the need for additional anti-rotation components, streamlining installation in wood-to-metal and structural steel applications. The UNC coarse threading provides superior pull-out resistance in softer materials while the fully threaded configuration ensures maximum engagement in varying material thicknesses. Engineered for industrial machinery, transportation equipment, and construction frameworks, these fasteners maintain integrity under dynamic loads and harsh environmental conditions, reducing maintenance frequency and lifecycle costs.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent assembly performance. Complies with ASME B18.5 dimensional specifications and SAE J429 Grade 5 mechanical requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features 5/16"-18 UNC coarse threads, right-hand thread direction, and Rockwell C25 hardness for reliable performance across industrial applications.
