S-90409A124 5/16"-18 x 1 1/4" 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 capacity with 150,000 PSI tensile strength for reliable performance in high-stress industrial environments
- Superior wear resistance due to Rockwell C32 hardness, ensuring extended service life and reduced maintenance costs
- Flanged design eliminates need for separate washers, speeding up installation while providing superior load distribution
- Full threading along the entire 1-1/4" length offers maximum grip and adjustment flexibility in various material thicknesses
- Coarse UNC thread pattern with Class 2A fit enables quick assembly and superior vibration resistance in demanding applications
- External hex drive compatibility with standard 1/2" wrenches for straightforward installation and removal
- Environmental compliance assurance with RoHS 3 and REACH standards, meeting global industrial safety requirements
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical performance where failure is not an option. The steel construction combined with 150,000 PSI tensile strength and Rockwell C32 hardness provides exceptional resistance to shear forces and environmental degradation. The flanged design eliminates washer requirements while distributing clamp load effectively, preventing surface damage and maintaining joint integrity. With fully threaded UNC coarse threads and Class 2A fit, these screws offer superior vibration resistance in machinery, structural steel connections, and automotive assemblies where reliability under dynamic loads is paramount. The external hex drive ensures compatibility with standard industrial tools, streamlining maintenance and installation processes.
Specification Summary & Compliance
Manufactured to SAE J429 specifications for Grade 8 fasteners with precise Class 2A thread fit tolerance. Features 5/16"-18 UNC coarse threads with 1-1/4" length and 11/16" flange diameter. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.
