S-98060A740 3/8"-16 x 2 1/2" 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
- Superior anti-rotation performance due to the knurled neck design, ensuring the bolt stays securely in place during assembly and under vibration.
- Enhanced corrosion resistance with zinc plating, providing reliable protection in various industrial and construction environments.
- High tensile strength of 60,000 psi and Grade 2 classification, offering dependable load-bearing capacity for heavy-duty applications.
- Easy installation and removal with coarse UNC threads and Class 2A fit, reducing assembly time and improving efficiency.
- Wide-rounded head design distributes clamping force effectively, minimizing surface damage and increasing joint integrity.
- Durable material hardness (Rockwell B69) ensures long-term performance and resistance to wear in demanding conditions.
- Compliance with industry standards including ASTM A307 and SAE J429, guaranteeing quality and reliability for professional use.
Professional Applications & Engineering Value
This zinc-plated steel carriage bolt is engineered to address common challenges in industrial and construction settings, such as loosening under dynamic loads and corrosion in harsh environments. The knurled neck provides excellent anti-rotation, preventing the bolt from turning during tightening—ideal for wood-to-metal connections or structural frameworks. With a Grade 2 strength rating and 60,000 psi tensile strength, it handles heavy-duty applications like machinery assembly, trailer hitches, and agricultural equipment. The coarse UNC thread and partial threading allow for quick installation and secure fastening, while the zinc plating extends service life by resisting rust. These features make it a reliable choice for engineers and contractors seeking durable, compliant fasteners that reduce maintenance and enhance safety.
Specification Summary & Compliance
This carriage bolt features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy. It meets specifications per ASTM A307 and SAE J429, ensuring consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental and safety standards, supporting sustainable procurement in industrial applications.
