S-90185A272 3/4"-10 x 8" 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 anti-rotation performance with a square neck design that securely locks into materials, preventing bolt spin during installation and under load.
- Exceptional tensile strength rated at 120,000 psi for Grade 5 classification, ensuring reliable performance in high-stress applications.
- Enhanced corrosion resistance through zinc-plated steel construction, providing durable protection in various industrial environments.
- Optimized thread engagement with UNC coarse threading and Class 3A fit, facilitating faster assembly and improved vibration resistance.
- Consistent dimensional accuracy meeting ASME B18.5 standards, guaranteeing interchangeability and reliable fit in pre-drilled holes.
- Robust material hardness at Rockwell C25, offering excellent wear resistance and durability over extended service life.
- Regulatory compliance assurance with RoHS 3 and REACH standards, making it suitable for global industrial supply chains.
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt delivers critical engineering solutions where vibration resistance and structural integrity are paramount. The fully threaded UNC coarse thread design ensures maximum grip length in wood-to-metal and structural steel connections, while the square neck eliminates rotational slippage during torque application. Its 120,000 psi tensile strength makes it ideal for heavy equipment, trailer manufacturing, and construction frameworks where dynamic loads and environmental exposure demand corrosion-resistant fasteners with predictable failure margins. The Class 3A thread fit provides precise tolerances for repetitive assembly operations in automated industrial settings.
Specification Summary & Compliance
Manufactured to ASME B18.5 dimensional specifications with Class 3A thread fit tolerances. The UNC coarse thread (3/4"-10) follows standardized inch system requirements. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Meets Grade 5 mechanical properties per SAE J429 standards.
