S-98060A310 5/16"-18 x 3/4" 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
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Reliable anti-rotation performance thanks to the knurled neck design that prevents loosening under vibration
- Excellent tensile strength of 60,000 psi (Grade 2) for secure fastening in structural applications
- Easy installation and removal with UNC coarse threading that resists cross-threading and provides quick assembly
- Wide bearing surface from the rounded carriage head that distributes load evenly and prevents pull-through
- Precision thread fit with Class 2A tolerance ensuring consistent performance and compatibility
- Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries
Professional Applications & Engineering Value
These zinc-plated steel carriage bolts deliver exceptional engineering value in industrial applications where vibration resistance and corrosion protection are critical. The knurled neck design provides positive anti-rotation security, eliminating the need for additional locking mechanisms in wood-to-metal connections, structural framing, and machinery assembly. The fully threaded UNC coarse pattern ensures maximum thread engagement and superior grip strength, while the rounded carriage head with wide bearing surface prevents embedding in softer materials. With Grade 2 strength classification and 60,000 psi tensile capacity, these fasteners maintain integrity under substantial loads, making them ideal for construction equipment, trailer manufacturing, and agricultural machinery where reliability cannot be compromised.
Specification Summary & Compliance
This 5/16"-18 carriage bolt features precise Class 2A thread fit with UNC coarse threading and right-hand direction. Manufactured to ASTM A307 and SAE J429 Grade 2 specifications, it delivers consistent dimensional accuracy with a Rockwell B69 hardness rating. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for industrial applications requiring certified components.
