S-90409A183 5/8"-11 x 5" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Maximum load-bearing capacity with Grade 8 steel construction and 150,000 psi tensile strength for critical structural applications
- Superior wear resistance due to Rockwell C32 hardness, ensuring extended service life in high-stress environments
- Enhanced stability and distribution through the integrated flange design, reducing surface pressure and preventing loosening
- Precise thread engagement with Class 2A UNC coarse threads, enabling faster assembly and reliable performance in vibration-prone settings
- Optimized torque transmission via the external hex drive and 15/16" head width, allowing secure installation with standard tools
- Versatile partial threading over 1 1/2" minimum length, providing flexibility for both clamping and alignment functions
- Compliance assurance meeting SAE J429, RoHS 3, and REACH standards for consistent quality and environmental responsibility
Professional Applications & Engineering Value
Engineered for demanding industrial environments, this Grade 8 hex head screw addresses critical challenges in heavy machinery, construction, and automotive assemblies. The high-strength steel composition and Rockwell C32 hardness resist deformation under extreme loads, while the UNC coarse thread design ensures rapid installation and reliable performance in vibration-intensive applications. The flanged head distributes clamping force evenly, reducing the risk of surface damage and maintaining joint integrity. With partial threading and 5" length, it accommodates varied material thicknesses, making it ideal for structural connections where 150,000 psi tensile strength is essential for safety and durability.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances and UNC thread standards for consistent dimensional accuracy. Manufacturing complies with IFI 111 specifications referencing SAE J429, ensuring mechanical properties meet Grade 8 requirements. The product is verified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming adherence to environmental and safety regulations for industrial use.
