S-90602A229 3/8"-16 x 3 1/2" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws
High-Strength Grade 8 Steel Flanged Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Exceptional load-bearing capacity with 150,000 psi tensile strength for reliable performance in high-stress applications
- Superior corrosion resistance through zinc yellow-chromate plating that extends service life in harsh environments
- Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance
- Enhanced torque transmission via external hex drive design for efficient installation with standard tools
- Increased bearing surface area from the integrated flange that distributes load and prevents pull-through
- Optimized for heavy machinery meeting SAE J429/IFI 111 specifications for consistent quality and reliability
- Reduced cross-threading risk with UNC coarse threading that enables faster assembly in industrial settings
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers critical engineering solutions for heavy equipment, structural frameworks, and machinery assembly where failure isn't an option. The zinc yellow-chromate plated steel construction provides dual protection against corrosion and wear, while the 150,000 psi tensile strength and Rockwell C32 hardness ensure structural integrity under extreme loads. The 3/8"-16 UNC coarse threading combined with partial threading allows for concentrated clamping force where needed most, and the flanged design eliminates the need for separate washers in automotive, construction, and industrial manufacturing applications. These heavy-duty hex bolts maintain precise Class 3A thread fit for vibration-resistant connections that withstand dynamic operating conditions.
Specification Summary & Compliance
Manufactured to exacting SAE J429/IFI 111 specifications with Class 3A thread fit for superior dimensional accuracy. Features 3/8"-16 UNC coarse threading with 3 1/2" length and partial threading configuration. The external hex drive (9/16" head width) and flanged design (13/16" flange diameter) provide optimal installation and load distribution. Compliant with industry standards for Grade 8 fastener strength requirements and surface treatment specifications.
