S-90409A135 3/8"-16 x 1 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 load-bearing capacity with 150,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance and durability thanks to Grade 8 steel construction and Rockwell C32 hardness
- Secure fastening with integrated flange that distributes load evenly and eliminates the need for separate washers
- Optimized for quick installation with coarse UNC threading and external hex drive for efficient torque application
- Precision thread fit (Class 2A) ensures consistent engagement and reduces the risk of cross-threading
- Partial threading design provides unthreaded shank for enhanced shear strength in structural connections
- Full regulatory compliance meeting IFI 111/SAE J429 standards, RoHS 3, and REACH for global industrial use
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers exceptional performance where failure is not an option. The 3/8"-16 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling faster assembly in production environments. The integrated flange design eliminates the need for additional washers, reducing component count and installation time. Manufactured from high-strength steel with precise Class 2A thread fit, these partially threaded screws maintain structural integrity under extreme loads, making them ideal for machinery, construction equipment, and automotive assemblies where 150,000 psi tensile strength is critical for safety and reliability.
Specification Summary & Compliance
This inch-measurement fastener features precise Class 2A thread fit according to UNC standards with a thread size of 3/8"-16 and minimum thread length of 1". The screw complies with IFI 111 specifications where identified as SAE J429 for Grade 8 mechanical properties. Manufacturing and material composition adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility and global market acceptance for industrial applications.
