S-93548A597 5/16"-18 x 3 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, extending service life in demanding industrial environments
- Reliable anti-rotation performance through integrated square neck design that prevents spinning during installation
- High tensile strength rating of 60,000 PSI ensures dependable load-bearing capacity for structural applications
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and reduced cross-threading risk
- Enhanced material durability with Rockwell B70 hardness that maintains integrity under repeated stress
- Broad compatibility with standard 5/16"-18 components and full 3-1/2" thread coverage for versatile fastening solutions
- 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 where vibration resistance and structural integrity are paramount. The square neck design mechanically locks into materials, eliminating rotational movement that compromises joint security in construction applications and industrial machinery. The UNC coarse threading provides superior pull-out resistance in wood and soft materials while enabling rapid installation. With 60,000 PSI tensile strength and Rockwell B70 hardness, these carriage bolts maintain clamping force under dynamic loads, making them ideal for structural framing, equipment mounting, and heavy-duty assemblies where reliability cannot be compromised.
Specification Summary & Compliance
This 5/16"-18 carriage bolt features precise Class 2A thread fit tolerances and fully threaded UNC coarse spacing per standard specifications. Manufacturing complies with ASTM A307 for chemical and mechanical properties, SAE J429 Grade 2 for strength classification, and ASME B18.5 for dimensional standards. The product is RoHS 3 (2015/863/EU) Compliant, ensuring environmental safety in global industrial supply chains.
