S-90185A149 5/8"-11 x 1 1/2" 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 slipping during and after installation.
- Exceptional tensile strength of 120,000 psi from Grade 5 classification, ensuring reliable load-bearing capacity in demanding applications.
- Enhanced corrosion resistance provided by the black-oxide steel finish, extending service life in various environmental conditions.
- Wide, rounded head design distributes clamping force effectively, minimizing surface damage and providing a finished appearance.
- Easy and secure installation with fully threaded UNC coarse pattern, allowing for quick assembly and strong holding power.
- Consistent dimensional accuracy with Class 2A thread fit, ensuring compatibility and reliable performance with standard nuts.
- High durability backed by Rockwell C25 hardness, offering excellent resistance to wear and deformation under stress.
Professional Applications & Engineering Value
This Grade 5 black-oxide steel carriage bolt is engineered to solve critical fastening challenges in heavy-duty industrial applications. The combination of a wide rounded head and square neck effectively counters rotation during torque application, making it ideal for wood-to-metal connections, structural framing, and machinery assembly where vibration resistance is paramount. The fully threaded UNC coarse pattern ensures rapid installation and robust grip in soft materials, while the black-oxide coating provides a protective layer against rust, enhancing longevity in outdoor or humid environments. With its high tensile strength and precise thread fit, this bolt delivers reliable performance in construction, automotive, and agricultural equipment, reducing maintenance needs and downtime.
Specification Summary & Compliance
This carriage bolt features a 5/8"-11 UNC coarse thread with Class 2A fit for consistent dimensional accuracy. It complies with ASME B18.5 specifications (SAE J429), ensuring manufacturing consistency and reliability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety standards for industrial use.
