S-90185A429 7/16"-14 x 1" ASME B18.5, SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing spinning during installation and use.
• Excellent corrosion resistance provided by the zinc-plated steel finish, ensuring long-term durability in harsh industrial environments.
• High tensile strength of 120,000 psi and Grade 5 classification, making it suitable for heavy-duty applications requiring reliable load-bearing capacity.
• Precise Class 3A thread fit ensures smooth assembly and consistent engagement, reducing the risk of cross-threading and improving installation efficiency.
• Fully threaded coarse UNC pattern allows for deep penetration and strong holding power in various materials, from wood to metal.
• Wide rounded carriage head distributes clamping force evenly, minimizing surface damage and providing a finished appearance.
• Compliance with ASME B18.5 and SAE J429 standards guarantees consistent quality and interoperability in industrial fastener systems.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt is engineered to address common challenges in industrial assembly, such as vibration-induced loosening and corrosion degradation. The square neck integrates seamlessly into pre-drilled holes, eliminating rotation during torque application—ideal for structural frameworks, machinery mounts, and transportation equipment. Its coarse UNC thread and Class 3A fit enhance grip in soft materials like wood or composite panels, while the zinc plating provides a protective barrier against moisture and chemicals. With a tensile strength of 120,000 psi and Rockwell C25 hardness, it withstands high-stress conditions in construction, automotive, and agricultural sectors, ensuring long-term reliability without frequent maintenance.

Specification Summary & Compliance

This carriage bolt adheres to Class 3A thread tolerance for precise fit and UNC coarse threading (7/16"-14) per standardized dimensions. It meets ASME B18.5 and SAE J429 specifications for mechanical properties and design consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use across global markets.