S-90185A179 3/8"-16 x 1" 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
- Exceptional Load-Bearing Capacity - Grade 5 classification and 120,000 psi tensile strength ensure reliable performance in demanding applications
- Superior Corrosion Protection - Zinc-flake coating provides excellent resistance against rust and environmental degradation
- Secure Anti-Rotation Design - Square neck prevents bolt spinning during installation and maintains permanent positioning
- Optimized Thread Engagement - Full UNC coarse threading enables faster installation and superior holding power
- Enhanced Durability - Rockwell C25 hardness maintains structural integrity under repeated stress and vibration
- Wide Application Compatibility - Rounded carriage head design distributes load evenly and prevents surface damage
- Industry Standard Compliance - Meets critical specifications for quality assurance and regulatory requirements
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers exceptional engineering value through its zinc-flake coated steel construction, specifically engineered to address common industrial challenges. The square neck design eliminates rotation during tightening, solving installation frustrations in wood-to-metal and structural applications. With UNC coarse threading and Class 2A thread fit, these bolts provide rapid assembly in construction equipment, agricultural machinery, and transportation frameworks. The combination of 120,000 psi tensile strength and corrosion-resistant coating ensures long-term reliability in outdoor and high-moisture environments, making them ideal for bridge construction, trailer manufacturing, and industrial platform assembly where vibration resistance and durability are critical.
Specification Summary & Compliance
This carriage bolt features precise Class 2A thread fit with UNC 3/8"-16 coarse threading and right-hand thread direction. Manufactured to ASME B18.5 and SAE J429 Grade 5 specifications, it ensures dimensional accuracy and mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest industry standards for safe and sustainable industrial fastening solutions.
