S-90409A148 1/2"-13 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
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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
- Exceptional load-bearing capacity with 150,000 psi tensile strength, ideal for high-stress industrial applications
- Superior corrosion resistance and durability thanks to Grade 8 steel construction and Rockwell C32 hardness
- Secure, vibration-resistant fastening provided by the integrated flange design and coarse UNC threading
- Easy installation and removal with standard 3/4" external hex drive for common tool compatibility
- Precise thread engagement ensured by Class 2A thread fit for reliable performance in demanding conditions
- Full-length threading offers maximum grip and adjustment flexibility across the entire 1 1/4" length
- Compliance with rigorous industry standards including SAE J429 and environmental regulations like RoHS 3 and REACH
Professional Applications & Engineering Value
These Grade 8 steel hex head screws deliver unmatched reliability in heavy machinery, construction, and automotive assemblies where failure is not an option. The fully threaded 1/2"-13 UNC coarse thread design ensures rapid installation and superior resistance to loosening under dynamic loads, while the flanged head distributes clamping force evenly, reducing surface damage and eliminating the need for separate washers. Manufactured to IFI 111/SAE J429 specifications, they provide consistent performance in extreme environments, making them ideal for structural connections, equipment frames, and high-vibration applications that demand 150,000 psi tensile strength and long-term integrity.
Specification Summary & Compliance
This 1/2"-13 hex head screw features a 1 1/4" length with Class 2A thread fit and UNC coarse threading for precise mechanical assembly. It meets IFI 111 SAE J429 standards for dimensional accuracy and material properties, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets.
