S-98060A320 5/16"-18 x 1" 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, ideal for outdoor or humid industrial environments.
- Superior tensile strength of 60,000 PSI ensures reliable performance in heavy-duty applications without failure.
- Knurled neck design prevents rotation during installation, providing secure fastening in wood or metal assemblies.
- Class 2A thread fit with UNC coarse threading allows for quick, easy installation and reduced cross-threading risks.
- Fully threaded shank offers maximum grip length and flexibility for various material thicknesses.
- Wide, rounded carriage head distributes load evenly and sits flush, minimizing surface damage.
- Compliance with ASTM A307 and SAE J429 standards guarantees consistent quality and engineering reliability.
Professional Applications & Engineering Value
Engineered for demanding industrial fastening scenarios, this 5/16"-18 UNC carriage bolt excels in construction, machinery, and automotive assemblies where vibration and load stress are common. The zinc-plated steel material combats rust and corrosion, extending service life in harsh conditions. Its coarse thread and Class 2A fit enable rapid installation with standard tools, reducing labor time while the knurled neck locks securely into pre-drilled holes, preventing spin-out in wood or soft metals. This design addresses critical issues like loosening under dynamic loads, ensuring long-term structural integrity for heavy-duty applications.
Specification Summary & Compliance
This carriage bolt adheres to precise inch system measurements with a Class 2A thread fit and UNC coarse thread specifications, ensuring dimensional accuracy. It meets ASTM A307 and SAE J429 standards for Grade 2 fasteners, with a tensile strength of 60,000 PSI and Rockwell B69 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.
