S-90185A106 1/4"-20 x 2 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 finish, extending service life in demanding industrial environments
- Exceptional load-bearing capacity with 120,000 psi tensile strength for heavy-duty applications
- Secure anti-rotation performance 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 fastening
- Enhanced durability with Rockwell C25 hardness rating for superior wear resistance
- Full-threaded design providing maximum grip length and versatile positioning options
- Industry-standard compliance ensuring consistent quality and interchangeability across applications
Professional Applications & Engineering Value
These Grade 5 carriage bolts deliver exceptional engineering value for structural connections in wood-to-metal and heavy timber applications. The black-oxide steel construction provides superior corrosion protection in industrial environments, while the square neck design effectively prevents rotation during torque application - eliminating the need for additional locking mechanisms. The fully threaded UNC coarse spacing ensures rapid installation and reliable performance in vibration-prone equipment. With 120,000 psi tensile strength and Rockwell C25 hardness, these bolts maintain structural integrity under significant mechanical stress, making them ideal for construction frameworks, agricultural machinery, trailer assemblies, and industrial equipment where anti-rotation performance and heavy-duty fastening are critical requirements.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. Complies with ASME B18.5 dimensional requirements and SAE J429 Grade 5 mechanical properties. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards for hazardous substance restrictions.
