S-90185A127 3/8"-16 x 3" 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 that securely locks into materials, preventing the bolt from turning during installation and under vibration.
- High tensile strength of 120,000 psi ensures reliable load-bearing capacity and structural integrity in demanding industrial applications.
- Enhanced corrosion resistance due to the black-oxide steel finish, providing durability in various environmental conditions.
- Wide rounded head design distributes clamping force effectively, reducing surface damage and improving joint stability.
- Coarse UNC threading (3/8"-16) allows for faster installation and easier alignment, ideal for wood and metal assemblies.
- Grade 5 strength classification guarantees consistent performance and reliability, meeting rigorous industrial standards.
- Full threading provides maximum grip length and flexibility for use in a wide range of material thicknesses.
Professional Applications & Engineering Value
This Grade 5 carriage bolt is engineered to address common challenges in industrial fastening, such as loosening under vibration and corrosion in harsh environments. The black-oxide steel material offers excellent protection against rust, while the square neck and wide rounded head work together to prevent rotation and distribute load evenly, minimizing material stress. With a Rockwell C25 hardness and 120,000 psi tensile strength, it excels in heavy-duty applications like construction, machinery, and transportation equipment, where coarse UNC threads ensure quick, secure assembly. Its compliance with ASME B18.5 standards ensures dimensional accuracy and interchangeability, making it a trusted choice for engineers seeking durability and efficiency.
Specification Summary & Compliance
This carriage bolt features a 3/8"-16 UNC coarse thread with Class 2A thread fit for precise tolerances and easy installation. It meets ASME B18.5 and SAE J429 specifications, ensuring consistent quality and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for industrial use.
