S-93548A594 5/16"-18 x 2 3/4" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Secure anti-rotation locking provided by the square neck design that prevents spinning during installation
• High tensile strength rating of 60,000 PSI ensures reliable performance in heavy-duty applications
• Easy installation and removal with fully threaded UNC coarse thread design and right-hand direction
• Consistent dimensional accuracy maintained through Class 2A thread fit for precise assembly
• Enhanced durability with Rockwell B70 hardness rating for resistance to deformation under load
• Regulatory compliance assurance meeting multiple industry standards for quality and safety

Professional Applications & Engineering Value

These Grade 2 carriage bolts are engineered to address critical fastening challenges in industrial and construction applications. The zinc-plated steel construction provides essential corrosion protection for outdoor equipment, agricultural machinery, and structural assemblies exposed to environmental elements. The distinctive square neck design prevents rotation during tightening, making them ideal for wood-to-metal connections and framing applications where security is paramount. With fully threaded UNC coarse threads, these fasteners offer superior grip strength in soft materials and faster installation compared to fine-thread alternatives. The combination of 60,000 PSI tensile strength and Rockwell B70 hardness ensures these carriage bolts maintain integrity under vibration and dynamic loading conditions common in transportation equipment and industrial machinery.

Specification Summary & Compliance

This 5/16"-18 carriage bolt features precise Class 2A thread fit tolerances and UNC coarse threading for consistent performance. Manufactured to meet ASTM A307, SAE J429 Grade 2, and ASME B18.5 specifications, ensuring dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant, confirming adherence to environmental regulations for hazardous substance restrictions. With a length of 2-3/4" and complete threading, this fastener delivers reliable performance across various industrial applications while maintaining compliance with recognized engineering standards.