S-90185A220 1/4"-20 x 4 1/2" 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
- Exceptional tensile strength of 120,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Zinc-plated steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit with UNC coarse threading offers precise, secure fastening and easier assembly in high-vibration settings.
- Square neck design prevents rotation during installation, ensuring stable and efficient mounting without additional tools.
- Grade 5 hardness (Rockwell C25) delivers excellent durability and resistance to wear, maintaining integrity under heavy loads.
- Full compliance with ASME B18.5 standards guarantees consistent quality and interoperability in machinery and construction projects.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains.
Professional Applications & Engineering Value
This Grade 5 zinc-plated steel carriage bolt is engineered to address common industrial challenges, such as loosening under vibration and corrosion in outdoor or humid conditions. The UNC coarse thread and Class 3A fit provide a tight, reliable grip that minimizes maintenance needs in heavy-duty applications like construction frameworks, agricultural equipment, and transportation assemblies. Its square neck locks securely into materials, preventing spin-out during torque application, while the zinc plating offers a protective barrier against rust, ensuring long-term performance in demanding environments. Ideal for engineers and procurement teams seeking durable fasteners that meet rigorous ASME B18.5 specifications for safety and efficiency.
Specification Summary & Compliance
This carriage bolt features precise dimensions, including a 1/4"-20 UNC coarse thread with Class 3A thread fit for high accuracy, a length of 4-1/2", and a square neck for anti-rotation. It complies with ASME B18.5 standards, ensuring consistent manufacturing quality, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental and health safety in industrial use.
