S-98060A380 5/16"-18 x 2" ASTM A307, SAE J429 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
- Enhanced corrosion resistance with zinc-plated steel construction, extending service life in humid or outdoor environments
- Superior tensile strength of 60,000 PSI ensures reliable load-bearing capacity for demanding industrial applications
- Secure anti-rotation design with a knurled neck that prevents loosening under vibration and dynamic loads
- Easy installation and alignment thanks to the rounded carriage head and coarse UNC threading
- Precision thread fit (Class 2A) provides consistent engagement and reduces the risk of cross-threading
- Compliance with ASTM A307 and SAE J429 standards guarantees consistent quality and engineering reliability
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence for global supply chains
Professional Applications & Engineering Value
This Grade 2 zinc-plated steel carriage bolt is engineered to address common challenges in structural and heavy-duty fastening. The partially threaded design with UNC coarse spacing allows for efficient installation in wood, metal, and composite materials, while the knurled neck provides superior resistance to rotation—critical in vibrating machinery, trailer assemblies, and construction frameworks. The zinc plating offers a protective barrier against rust and corrosion, making it ideal for outdoor equipment, agricultural machinery, and marine applications. With a 60,000 PSI tensile strength and Rockwell B69 hardness, this bolt maintains integrity under stress, reducing maintenance needs and downtime in industrial settings.
Specification Summary & Compliance
This carriage bolt features a 5/16"-18 UNC thread with Class 2A fit for precise dimensional accuracy, ensuring compatibility with standard nuts and pre-tapped holes. It meets ASTM A307 and SAE J429 specifications for material and mechanical properties, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting sustainable and safe manufacturing practices.
