S-93548A599 5/16"-18 x 4" ASTM A307, SAE J429, ASME B18.5 Carriage Bolts
Carriage Bolts
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Basic Information
Head Parameters
Neck & Shank Parameters
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating for extended service life in demanding industrial environments
- Exceptional tensile strength rated at 60,000 PSI for reliable performance in heavy-duty applications
- Secure anti-rotation locking with integrated square neck design that prevents spinning during installation
- Optimized thread engagement with coarse UNC threads providing faster assembly and reduced cross-threading risk
- Consistent hardness performance at Rockwell B70 ensuring dimensional stability under load
- Full-threaded design offering maximum adjustability and grip length versatility
- Regulatory compliance assurance meeting multiple industry standards for quality and environmental safety
Professional Applications & Engineering Value
These Grade 2 zinc-plated steel carriage bolts deliver critical engineering solutions for structural connections where vibration resistance and long-term reliability are paramount. The combination of coarse UNC threading and square neck design addresses common installation challenges in wood-to-metal and timber construction applications by preventing rotation during torque application. The zinc-plated steel construction provides essential corrosion protection for both indoor industrial equipment and outdoor structural frameworks, while the 60,000 PSI tensile strength ensures structural integrity in load-bearing assemblies. These fully threaded carriage bolts are particularly valuable in construction, agricultural equipment, and transportation infrastructure where Class 2A thread fit guarantees consistent mating with standard nuts.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse threading (5/16"-18). Complies with ASTM A307 for low carbon steel structural bolts, SAE J429 for mechanical properties, and ASME B18.5 for dimensional requirements. Meets RoHS 3 (2015/863/EU) compliance for environmental safety. Features include 4" length, 0.313" diameter, right-hand threading, and Rockwell B70 hardness specification.
