S-98060A560 5/16"-18 x 1 1/2" SAE J429 Carriage Bolts

Key Features & Benefits at a Glance

• Exceptional Strength for Heavy-Duty Use: With a tensile strength of 120,000 psi and Grade 5 classification, this bolt reliably handles high-stress applications in construction and industrial machinery.
• Superior Anti-Rotation & Security: The knurled neck grips firmly into materials, preventing spinning during installation and ensuring a stable, long-lasting connection.
• Enhanced Corrosion Resistance: Zinc-plated steel construction provides a durable barrier against rust and environmental wear, extending service life in harsh conditions.
• Optimized for Quick Assembly: Coarse UNC threading and Class 2A thread fit allow for faster, easier installation with standard tools, reducing labor time and errors.
• Wide Head Design for Secure Fastening: The rounded carriage head with a wide profile distributes load evenly, minimizing surface damage and improving joint integrity.
• Reliable Partial Threading: The partially threaded design offers a smooth shank for shear resistance and a threaded portion for secure nut retention, ideal for wood and metal assemblies.
• Compliance with Industry Standards: Meets SAE J429 specifications and environmental regulations like RoHS 3 and REACH, ensuring safety and regulatory acceptance in global markets.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel carriage bolt is engineered to address common challenges in heavy-duty fastening, such as vibration-induced loosening and corrosion in outdoor or industrial environments. The knurled neck provides critical anti-rotation, making it ideal for wood-to-metal connections in construction, agricultural equipment, and trailer assemblies where stability is paramount. Its coarse UNC threading and Class 2A thread fit ensure quick, reliable engagement even in rough materials, reducing installation time and improving workflow efficiency. The zinc plating offers a cost-effective corrosion barrier, extending the bolt's lifespan in applications exposed to moisture or chemicals. With a tensile strength of 120,000 psi and compliance with SAE J429, it delivers consistent performance in structural frameworks, machinery, and automotive components, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This carriage bolt features precise Class 2A thread fit with 5/16"-18 UNC coarse threading and a partially threaded design for optimal performance. It adheres to SAE J429 standards for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met. Manufactured from zinc-plated steel with a hardness of Rockwell C25, it guarantees durability and reliability in industrial and construction applications.