S-92316A217 1/4"-28 x 3/4" 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 strength for heavy-duty applications with Grade 8 classification and 150,000 psi tensile strength, ensuring reliable performance under high stress.
- Superior corrosion resistance thanks to the black-phosphate steel coating, extending service life in harsh industrial environments.
- Precise and secure fastening with UNF fine threading and Class 3A fit, minimizing the risk of loosening in vibrating machinery.
- Easy installation and removal using the external hex drive and flanged design, which eliminates the need for separate washers and speeds up assembly.
- Full thread engagement for maximum grip across the entire 3/4" length, providing uniform clamping force in demanding setups.
- Compliance with industry standards including IFI 111/SAE J429, RoHS 3, and REACH, ensuring safety and regulatory adherence for global use.
- Enhanced durability with Rockwell C32 hardness, resisting wear and deformation in repetitive or high-torque applications.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered from black-phosphate steel to address common industrial challenges like corrosion and mechanical failure. The UNF fine thread and Class 3A fit deliver tight tolerances, reducing vibration-induced loosening in equipment such as automotive assemblies, machinery frames, and construction projects. The flanged design distributes load evenly, preventing surface damage, while the high tensile strength of 150,000 psi ensures integrity in heavy-load scenarios. Ideal for industrial fastening where reliability and compliance with standards like SAE J429 are critical, this screw minimizes maintenance and downtime in demanding environments.
Specification Summary & Compliance
This screw features a 1/4"-28 UNF fine thread with Class 3A precision for accurate fit, and is fully threaded for consistent performance. It meets manufacturing specifications under IFI 111/SAE J429 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards for industrial use.
