S-90409A212 3/4"-16 x 3" 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 for reliable performance in high-stress applications
- Superior wear resistance due to Rockwell C32 hardness, ensuring long service life under demanding conditions
- Enhanced vibration resistance from UNF fine threading and Class 2A thread fit, maintaining secure connections
- Simplified installation and increased bearing surface with integrated flange design, eliminating the need for separate washers
- Optimized for heavy machinery through Grade 8 steel construction, providing robust durability in industrial environments
- Reduced cross-threading risk with partially threaded shank design, facilitating easier alignment and assembly
- Global compliance assurance meeting RoHS 3 and REACH regulations, suitable for international industrial projects
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver critical reliability in construction equipment, automotive assemblies, and machinery frames where high tensile strength and vibration resistance are paramount. The UNF fine threading combined with Class 2A thread fit ensures precise engagement and sustained clamp load under dynamic stresses, while the flanged design distributes pressure evenly to prevent surface damage. Manufactured from high-grade steel with Rockwell C32 hardness, they resist deformation and wear in corrosive environments, making them ideal for structural fastening where failure is not an option. Their compliance with IFI 111/SAE J429 standards guarantees consistent quality for engineering specifications requiring dependable inch system fasteners.
Specification Summary & Compliance
This 3/4"-16 UNF hex head screw features precise Class 2A thread fit per UNF standards with a minimum thread length of 1 3/4" and partial threading for optimized grip. Manufactured to IFI 111 SAE J429 specifications, it ensures dimensional accuracy and mechanical properties for industrial use. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for global market acceptance.
