S-90185A235 3/8"-16 x 3 1/4" 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 due to the square neck design that prevents spinning during installation and use
- Exceptional tensile strength of 120,000 psi (Grade 5) ensures reliable performance in heavy-duty applications
- Enhanced corrosion resistance from zinc-plated steel construction, extending service life in harsh environments
- Secure fastening with precision threads featuring UNC coarse spacing and Class 3A fit for consistent engagement
- Easy installation and removal with fully threaded right-hand design and wide rounded head for better tool access
- High durability supported by Rockwell C25 hardness, maintaining structural integrity under stress
- Broad compatibility with standard industrial equipment thanks to ASME B18.5 and SAE J429 compliance
Professional Applications & Engineering Value
This Grade 5 carriage bolt is engineered to address critical challenges in industrial and construction settings, where vibration resistance and long-term reliability are paramount. The zinc-plated steel material provides a protective barrier against rust and corrosion, making it ideal for outdoor structures, machinery assemblies, and automotive applications. The square neck securely locks into materials, preventing rotation during torque application and reducing maintenance needs. With UNC coarse threads and Class 3A thread fit, it ensures quick installation and strong holding power in wood, metal, and composite materials. Fully threaded and right-hand designed, it supports efficient assembly in heavy-duty fastening scenarios, from framing to equipment manufacturing, delivering consistent performance under high stress.
Specification Summary & Compliance
This carriage bolt meets precise dimensional standards with a 3/8"-16 UNC coarse thread and Class 3A thread fit for accurate engagement. It conforms to ASME B18.5 and SAE J429 specifications, ensuring manufacturing consistency. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory adherence in global markets.
