S-90185A266 5/8"-11 x 11" 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 demanding environments
- Exceptional load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for heavy-duty applications
- Secure anti-rotation locking through square neck design that prevents spinning during installation and operation
- Optimized thread engagement with Class 3A thread fit ensuring precise, vibration-resistant fastening connections
- Enhanced installation efficiency with partially threaded UNC coarse threads for faster assembly in wood and metal
- Reliable mechanical performance backed by Rockwell C25 hardness for consistent durability under stress
- Broad compatibility with rounded carriage head profile fitting standard washers and providing finished appearance
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt delivers critical engineering solutions for structural connections in construction, heavy equipment, and transportation applications. The square neck design mechanically locks into materials to prevent rotation during torque application, eliminating the need for secondary locking mechanisms. The partially threaded configuration with UNC coarse threads provides optimal grip length for joining wood-to-metal and structural steel assemblies, while the zinc plating offers sacrificial protection against environmental corrosion. With 120,000 psi tensile strength and Rockwell C25 hardness, this fastener maintains integrity under dynamic loads and vibration, making it ideal for trailer beds, structural framing, and industrial machinery where reliability is paramount.
Specification Summary & Compliance
Manufactured to ASME B18.5 and SAE J429 specifications with 5/8"-11 UNC coarse threads in Class 3A thread fit for precision tolerance. The 11" length with partial threading and square neck meets dimensional requirements for carriage bolt applications. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors.
