S-90185A105 1/4"-20 x 2 1/4" ASME B18.5, SAE J429 Carriage Bolts
Carriage Bolts
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior load-bearing capacity with Grade 5 classification and 120,000 psi tensile strength for demanding industrial applications
- Enhanced corrosion resistance through black-oxide steel coating, extending service life in various environments
- Secure anti-rotation locking provided by the square neck design, preventing bolt spin during installation and operation
- Reliable coarse thread engagement with UNC Class 2A fit for quick assembly and vibration resistance
- Full-length threading ensures maximum grip range and flexibility in material thickness
- Wide rounded head profile distributes clamping force evenly while providing an attractive finished appearance
- Rockwell C25 hardness maintains structural integrity under heavy loads and repeated stress
Professional Applications & Engineering Value
This Grade 5 carriage bolt delivers exceptional engineering value through its combination of black-oxide steel construction and precision UNC coarse threading. The square neck carriage bolt design solves critical installation challenges by preventing rotation during tightening, making it ideal for wood-to-metal connections, structural framing, and machinery assembly where secure, non-slip fastening is essential. The fully threaded configuration accommodates varying material thicknesses while maintaining consistent Class 2A thread fit for reliable performance in industrial applications requiring repeated disassembly and reassembly. The corrosion-resistant black-oxide finish ensures long-term durability in environments where moisture or chemical exposure might compromise fastener integrity.
Specification Summary & Compliance
This carriage bolt features precision 1/4"-20 UNC coarse threads with Class 2A fit tolerances, manufactured to ASME B18.5 standards SAE J429. The fastener meets Grade 5 requirements with 120,000 psi tensile strength and Rockwell C25 hardness. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and workplace safety standards are maintained.
