S-93548A634 3/8"-16 x 2 1/2" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts

Key Features & Benefits at a Glance

• Superior anti-rotation performance with a square neck design that securely locks into materials, preventing bolt spin during installation and under vibration
• Enhanced corrosion resistance through zinc plating, providing durable protection for industrial and outdoor applications
• High tensile strength of 60,000 PSI ensures reliable load-bearing capacity and structural integrity in demanding environments
• Rockwell B70 hardness offers excellent durability and resistance to wear, extending service life
• Fully threaded UNC coarse spacing allows for faster assembly and secure fastening in various materials
• Class 2A thread fit provides consistent, reliable engagement with standard nuts and tapped holes
• Wide rounded head profile distributes clamping force evenly and reduces surface damage

Professional Applications & Engineering Value

This Grade 2 zinc-plated steel carriage bolt is engineered to solve critical fastening challenges in industrial settings. The square neck design eliminates rotation during tightening, making it ideal for wood-to-metal connections, structural framing, and machinery assembly where vibration resistance is crucial. The UNC coarse thread ensures quick installation in soft materials like wood and plastic, while the 60,000 PSI tensile strength provides reliable performance in load-bearing applications. The zinc plating offers corrosion protection for outdoor equipment, agricultural machinery, and construction projects, ensuring long-term reliability even in harsh environments.

Specification Summary & Compliance

This carriage bolt features Class 2A thread fit with UNC coarse threading (3/8"-16) and meets ASTM A307, SAE J429, and ASME B18.5 manufacturing specifications. The product is RoHS 3 (2015/863/EU) compliant, ensuring environmental safety standards are maintained for industrial applications.