S-93548A737 1/2"-13 x 6 1/2" 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-plated steel construction for extended service life in demanding environments
- Exceptional tensile strength rated at 60,000 psi to handle heavy-duty loads and structural applications
- Secure anti-rotation design featuring a square neck that prevents spinning during installation and use
- Optimized thread engagement with partial threading and Class 2A fit for reliable fastening and easier assembly
- Wide bearing surface from the rounded carriage head design that distributes load pressure effectively
- Industry-standard compatibility with UNC coarse threading (1/2"-13) for broad application across equipment and structures
- Enhanced durability with Rockwell B70 hardness that maintains integrity under repeated stress
Professional Applications & Engineering Value
These zinc-plated steel carriage bolts deliver critical performance advantages in heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The square neck design mechanically locks into materials, eliminating rotation during torque application - a crucial feature in wood-to-metal connections and structural framing. The Grade 2 strength classification combined with 60,000 psi tensile strength ensures reliable performance in construction, agricultural equipment, and trailer assemblies where dynamic loads are common. The zinc plating provides essential corrosion protection for both indoor and outdoor applications, while the UNC coarse threading offers superior engagement in various materials including wood, steel, and composite structures.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit and 1/2"-13 UNC coarse thread specifications. These carriage bolts comply with ASTM A307, SAE J429, and ASME B18.5 manufacturing standards. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. The partially threaded design provides 6" minimum thread length on the 6-1/2" overall length fastener with right-hand thread direction.
