S-90185A114 5/16"-18 x 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 Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Anti-rotation security through square neck design that prevents spinning during installation and operation
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring reliable fastening in various materials
- Enhanced durability with Rockwell C25 hardness maintaining structural integrity under repeated stress
- Regulatory compliance meeting ASME B18.5 standards and environmental regulations including RoHS 3 and REACH
- Versatile installation with fully threaded design and rounded carriage head for flush mounting in wood and metal assemblies
Professional Applications & Engineering Value
This Grade 5 black-oxide steel carriage bolt delivers critical performance in structural applications where vibration resistance and long-term reliability are paramount. The square neck design mechanically locks into materials during installation, eliminating rotation issues common in high-vibration environments. The UNC coarse threading provides superior pull-out resistance in wood, plastic, and softer metals, while the fully threaded configuration ensures maximum engagement depth. The black-oxide coating offers substantial corrosion protection without compromising dimensional accuracy, making these carriage bolts ideal for agricultural equipment, trailer assemblies, structural frameworks, and industrial machinery where exposure to elements and heavy loads demands both strength and environmental resistance.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications (5/16"-18). Complies with ASME B18.5 manufacturing standards and meets material requirements of SAE J429 for Grade 5 fasteners. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. The bolt features a 0.3125" diameter, 2" length, and right-hand threading with full thread coverage for consistent performance across applications.
