S-90129A118 5/16"-18 x 1 1/4" 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
- Exceptional load-bearing capacity with 120,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion protection through black corrosion-resistant coating, extending service life in harsh environments
- Optimized thread engagement with UNC coarse threading and Class 2A fit for faster assembly and secure fastening
- Enhanced stability and distribution from the integrated flange design, eliminating the need for separate washers
- Consistent mechanical properties with Rockwell C22 hardness, ensuring dimensional stability under stress
- Full-threaded construction providing maximum grip length and uniform clamping force along the entire fastener
- Industry-standard compliance meeting SAE J429 specifications for guaranteed quality and interchangeability
Professional Applications & Engineering Value
This Grade 5 hex head screw with black corrosion-resistant coating addresses critical industrial challenges where exposure to moisture, chemicals, and mechanical stress compromise fastener integrity. The UNC coarse threading and Class 2A fit ensure rapid installation in structural steel, machinery, and heavy equipment assemblies, reducing assembly time while maintaining vibration resistance. The fully threaded flange design provides superior load distribution, preventing surface damage and maintaining joint integrity in high-stress applications. Engineered to SAE J429 standards, these industrial fasteners deliver consistent performance in construction, automotive, and manufacturing sectors where reliability and corrosion protection are paramount.
Specification Summary & Compliance
Manufactured to precise inch system dimensions with Class 2A thread fit tolerance for consistent mating with standard nuts and threaded holes. Complies with IFI 111 specifications where identified as SAE J429, ensuring mechanical properties and dimensional accuracy. Meets environmental regulations including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant for safe use in regulated industries.
