S-90185A268 3/4"-10 x 4 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
- Exceptional tensile strength with 120,000 psi rating ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc-plated steel construction extends service life in harsh industrial and outdoor environments.
- Effective anti-rotation design with a square neck prevents spinning during installation, saving time and improving assembly accuracy.
- High thread precision with Class 3A UNC coarse threads provides secure, vibration-resistant connections in demanding settings.
- Enhanced durability from Rockwell C25 hardness maintains structural integrity under repetitive loads and impacts.
- Broad compatibility with Grade 5 strength standards and coarse threading simplifies sourcing for various machinery and structural projects.
- Regulatory compliance with ASME, SAE, RoHS 3, and REACH ensures safety and environmental responsibility in global supply chains.
Professional Applications & Engineering Value
This Grade 5 carriage bolt is engineered to address common industrial fastening challenges, such as joint loosening under vibration and corrosion in exposed conditions. The zinc-plated steel material offers a protective barrier against moisture and chemicals, ideal for construction, automotive, and heavy machinery applications. Its square neck design locks securely into materials, eliminating rotation during torque application and ensuring consistent clamp load. With UNC coarse threads and Class 3A fit, it delivers quick assembly and high resistance to dynamic stresses, reducing maintenance needs and enhancing operational safety in structural frameworks and equipment mounts.
Specification Summary & Compliance
This carriage bolt adheres to precise dimensional standards, including a Class 3A thread fit and UNC coarse thread specifications for accurate engagement. It meets ASME B18.5 and SAE J429 manufacturing guidelines, ensuring consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms its environmental safety, free from hazardous substances, making it suitable for regulated industrial and international projects.
