S-90185A141 1/2"-13 x 2 1/4" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional Tensile Strength – With 120,000 psi tensile strength, this bolt provides reliable performance in high-stress applications, reducing the risk of failure.
• Corrosion-Resistant Black-Oxide Finish – The black-oxide steel coating offers enhanced durability and protection against rust, extending service life in harsh environments.
• Secure Square Neck Design – The square neck prevents rotation during installation, ensuring a tight, stable fit without the need for additional tools.
• Precision UNC Coarse Threads – Fully threaded with Class 2A fit and coarse spacing for quick, easy assembly and strong holding power in various materials.
• Grade 5 Hardness & Reliability – Rockwell C25 hardness and Grade 5 classification guarantee consistent performance under heavy loads and repeated use.
• Wide Rounded Head for Even Distribution – The wide, rounded carriage head distributes clamping force evenly, minimizing surface damage and improving joint integrity.
• Compliance with Industry Standards – Meets ASME B18.5 and SAE J429 specifications, ensuring compatibility and safety in regulated industrial settings.

Professional Applications & Engineering Value

This Grade 5 carriage bolt is engineered to address common industrial challenges, such as vibration loosening and corrosion in demanding environments. Made from black-oxide steel, it resists moisture and wear, making it ideal for outdoor machinery, construction frameworks, and agricultural equipment. The square neck locks securely into place, preventing spin-out during torque application, while the UNC coarse threads facilitate rapid installation in wood, metal, and composite materials. With a tensile strength of 120,000 psi and full threading, it ensures robust connections in structural assemblies, reducing maintenance needs and enhancing operational safety. Its compliance with ASME B18.5 and other standards guarantees reliability for B2B procurement in sectors like manufacturing and infrastructure.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit and UNC coarse threading with a size of 1/2"-13, ensuring dimensional accuracy per industry norms. It adheres to ASME B18.5 and SAE J429 manufacturing specifications, providing consistent quality. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for global industrial use.