S-98060A650 3/8"-16 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 anti-rotation performance due to the knurled neck design, preventing loosening under vibration in demanding applications.
- Superior corrosion resistance provided by the zinc-plated steel finish, extending service life in various industrial environments.
- High tensile strength of 60,000 PSI (Grade 2) ensures reliable fastening for heavy-duty construction and structural applications.
- Wide, rounded carriage head offers a larger bearing surface for secure clamping and a finished appearance.
- Coarse UNC thread (3/8"-16) with Class 2A fit allows for quicker assembly and easier alignment in wood and metal.
- Robust Rockwell B69 hardness provides excellent durability and resistance to wear and deformation.
- Full threading along the 1" length offers versatile fastening depth and maximum grip range.
Professional Applications & Engineering Value
This Grade 2 carriage bolt is engineered to solve critical challenges in construction, manufacturing, and heavy equipment assembly. The zinc-plated steel construction combats rust and corrosion, essential for outdoor or high-moisture environments. Its defining knurled neck bites into the mounting material, providing superior anti-rotation security that prevents the bolt from spinning during nut tightening or under constant vibration—a common failure point in machinery and structural frameworks. The coarse UNC thread ensures rapid installation and reliable performance in wood, steel, and other materials, making it a versatile and dependable choice for engineers and builders who require a fastener that combines high tensile strength with practical, time-saving features.
Specification Summary & Compliance
This carriage bolt features a 3/8"-16 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured to meet ASTM A307 and SAE J429 specifications for Grade 2 fasteners, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
