S-90602A245 5/16"-18 x 1 3/4" 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
- Exceptional load-bearing capability with 150,000 PSI tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Enhanced installation efficiency through external hex drive design that prevents tool slippage during tightening
- Optimized thread engagement with UNC coarse threading and Class 2A fit ensuring secure fastening in various materials
- Increased bearing surface area from the integrated flange design that distributes clamping force more effectively
- Consistent mechanical properties maintained through Rockwell C32 hardness and Grade 8 certification
- Reduced assembly complexity with partial threading that provides both threaded and unthreaded sections for versatile applications
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural frameworks, and industrial equipment where vibration resistance and long-term reliability are paramount. The zinc yellow-chromate plated steel construction provides exceptional corrosion protection in demanding environments, while the UNC coarse thread pattern ensures rapid installation and secure fastening in various substrates. The partially threaded design with flange feature eliminates the need for separate washers, streamlining assembly processes in automotive, construction, and manufacturing applications where SAE J429 compliance is required for quality assurance.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC 5/16"-18 coarse threading and 1-3/4" length dimensions. This fastener meets IFI 111 specifications and complies with SAE J429 standards for Grade 8 mechanical properties, ensuring consistent performance and interchangeability. The external hex drive configuration and right-hand thread direction follow industry-standard installation practices for reliable deployment across various industrial applications.
