S-98060A620 5/16"-18 x 2 1/2" 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 thanks to the knurled neck design, preventing the bolt from turning during installation and ensuring a secure, permanent hold.
- High-strength reliability with a Grade 5 classification and 120,000 psi tensile strength, built to withstand significant stress and vibration in demanding applications.
- Enhanced corrosion resistance provided by the zinc-plated steel construction, extending the bolt's service life in various environmental conditions.
- Optimized for quick assembly featuring a coarse UNC thread and rounded head, allowing for faster installation and reducing labor time.
- Wide head profile distributes clamping force over a larger area, minimizing surface damage and providing a more stable connection.
- Consistent quality and precision with Class 2A thread fit, ensuring smooth engagement with nuts and threaded holes for reliable fastening.
- Compliance with industry standards including SAE J429, RoHS, and REACH, guaranteeing material quality and environmental safety for professional use.
Professional Applications & Engineering Value
This Grade 5 carriage bolt is engineered to solve critical fastening challenges in industrial applications such as construction, machinery assembly, and heavy equipment. The combination of zinc-plated steel and a Rockwell C25 hardness provides excellent durability against wear and environmental exposure. The knurled neck is a key feature that prevents rotation when tightened, eliminating the need for a second tool to hold the bolt head and speeding up installation in wood or metal frameworks. The partially threaded design with UNC coarse threading ensures a strong grip in softer materials, making it an ideal choice for structural connections where vibration resistance and long-term reliability are paramount.
Specification Summary & Compliance
This carriage bolt features a 5/16"-18 UNC coarse thread with a Class 2A thread fit for precise dimensional accuracy. It is manufactured to meet SAE J429 specifications for Grade 5 fasteners and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and safe for professional use.
