S-90129A125 3/8"-16 x 2" IFI 111, SAE J429 Medium-Strength Grade 5 Steel Flanged Hex Head Screws
Medium-Strength Grade 5 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
- Enhanced corrosion resistance with black protective coating extends service life in demanding environments
- Superior load-bearing capacity with 120,000 psi tensile strength for heavy-duty applications
- Reliable thread engagement through UNC coarse threading and Class 2A fit ensures secure fastening
- Simplified installation with external hex drive and flanged design eliminates need for separate washers
- Optimized material hardness at Rockwell C22 provides excellent durability against wear and deformation
- Versatile partial threading allows for both clamping and alignment functions in assembly operations
- Industry compliance assurance meeting SAE J429, RoHS 3, and REACH standards for quality and safety
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers exceptional engineering value through its black corrosion-resistant coated steel construction, specifically engineered to withstand harsh industrial environments where moisture and chemicals pose challenges. The UNC coarse threading combined with Class 2A thread fit ensures rapid assembly and reliable performance in vibration-prone applications, while the integrated flange design distributes clamping force effectively across wider surfaces. With partial threading and external hex drive, these screws provide optimal solutions for machinery assembly, structural frameworks, and heavy equipment manufacturing where both strength and corrosion protection are critical requirements.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (3/8"-16) and compliant with IFI 111 specifications where identified as SAE J429. This fastener meets RoHS 3 (2015/863/EU) compliance standards and REACH (EC 1907/2006) regulations current as of June 14, 2023. The Grade 5 classification ensures consistent mechanical properties including 120,000 psi tensile strength and Rockwell C22 hardness for reliable performance in industrial applications.
