S-98060A870 3/8"-16 x 3" SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial or outdoor environments.
• Secure anti-rotation design with a knurled neck that bites into materials, preventing the bolt from spinning during installation and enhancing joint stability.
• Easy installation and removal with UNC coarse threading and Class 2A fit, providing smooth engagement and reducing assembly time.
• Wide, rounded head distributes clamping force evenly, minimizing surface damage and offering a finished appearance.
• High hardness rating of Rockwell C25 ensures durability and resistance to wear, maintaining integrity through repeated use.
• Compliance with industry standards including SAE J429, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt is engineered to address common challenges in industrial fastening, such as vibration loosening and corrosion. The knurled neck provides a firm grip in wood or metal, eliminating the need for additional locking mechanisms and speeding up assembly in construction, agricultural equipment, and transportation frameworks. With UNC coarse threads and partial threading, it offers optimal shear strength and easy alignment, reducing installation errors. The zinc plating adds a protective barrier against moisture and chemicals, making it ideal for outdoor or high-humidity settings where durability is critical. By combining high tensile strength with standardized dimensions, this bolt ensures consistent performance in heavy-duty applications, minimizing maintenance and downtime.

Specification Summary & Compliance

This carriage bolt features precise inch system measurements with a 3/8"-16 UNC thread size and Class 2A thread fit for reliable tolerance. It adheres to SAE J429 specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The bolt's partially threaded design and right-hand thread direction align with industry norms, supporting interoperability in various assemblies.