S-90602A248 5/16"-18 x 2 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Maximum load-bearing capacity with 150,000 psi tensile strength and Grade 8 classification for critical structural applications
- Enhanced corrosion resistance through zinc yellow-chromate plating that protects against industrial environmental damage
- Superior thread engagement with Class 2A thread fit and UNC coarse threading for faster assembly and vibration resistance
- Integrated flange design eliminates need for separate washers while providing superior load distribution
- Optimized drive efficiency with external hex head design allowing high torque application without stripping
- Reliable material performance featuring Rockwell C32 hardness for exceptional durability under repeated stress
- Industry compliance assurance meeting SAE J429/IFI 111 specifications for guaranteed quality and interchangeability
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional performance in heavy machinery, construction equipment, and structural assemblies. The zinc yellow-chromate plated steel construction provides superior corrosion protection in harsh environments, while the partially threaded design with UNC coarse threads ensures optimal clamping force distribution. The integrated flange feature eliminates washer requirements, reducing component count and assembly time. With external hex drive compatibility, these heavy-duty fasteners accommodate high-torque installation tools, making them ideal for industrial maintenance and manufacturing applications where reliability is paramount.
Specification Summary & Compliance
This 5/16"-18 UNC hex head screw features Class 2A thread fit tolerances and partial threading with minimum 7/8" thread length. Manufactured to meet SAE J429 and IFI 111 specifications, ensuring dimensional accuracy and mechanical properties. The fastener complies with industry standards for Grade 8 strength classification, providing guaranteed 150,000 psi tensile strength and Rockwell C32 hardness for consistent performance in critical applications.
