S-90409A118 1/4"-20 x 2 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
- Maximum load-bearing capacity with 150,000 psi tensile strength for critical structural applications
- Superior wear resistance due to Rockwell C32 hardness, extending service life in demanding environments
- Enhanced stability and distribution from the integrated flange, reducing the need for separate washers
- Reliable coarse threading (UNC 1/4"-20) provides excellent grip in various materials and faster installation
- Precise Class 2A thread fit ensures consistent performance and compatibility with standard nuts
- Heavy-duty Grade 8 certification guarantees consistent mechanical properties for industrial use
- Environmental compliance with RoHS 3 and REACH regulations for safe global sourcing
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers exceptional engineering value in heavy machinery, construction equipment, and automotive assemblies where vibration resistance and structural integrity are paramount. The partially threaded design provides optimal clamping force concentration while the external hex drive enables high-torque installation with standard tools. Manufactured from high-strength steel with UNC coarse threading, it maintains reliable performance in high-stress applications where fine threads might fail. The integrated flange distributes load pressure effectively, preventing surface damage and reducing assembly components. These industrial fasteners meet rigorous SAE J429 specifications for consistent quality in critical connections.
Specification Summary & Compliance
This fastener features 1/4"-20 UNC coarse threading with Class 2A thread fit for precise dimensional accuracy. Manufactured to IFI 111 specifications where identified as SAE J429 compliant, ensuring consistent mechanical properties. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards for restricted substances. With Grade 8 strength classification, Rockwell C32 hardness, and 150,000 psi tensile strength, it delivers reliable performance for industrial applications requiring certified fasteners.
