S-90129A126 1/2"-13 x 1" 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 corrosion protection with black corrosion-resistant coating for extended service life in demanding environments
- Superior load-bearing capacity with 120,000 psi tensile strength, ideal for heavy-duty applications
- Optimized thread engagement through UNC coarse threading and Class 2A fit for reliable fastening
- Enhanced installation efficiency with external hex drive design providing secure tool engagement
- Integrated flange design eliminates need for separate washers while distributing clamping force evenly
- Certified material integrity with Rockwell C22 hardness ensuring consistent mechanical properties
- Full regulatory compliance meeting SAE J429, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These Grade 5 hex head screws deliver critical performance in industrial fastening applications where corrosion resistance and structural integrity are paramount. The black corrosion-resistant coated steel construction protects against environmental degradation in manufacturing facilities, construction projects, and heavy equipment assembly. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation with reduced cross-threading risk, while the flanged design provides superior bearing surface contact. With 120,000 psi tensile strength and external hex drive, these fully threaded screws maintain clamping force under vibration and dynamic loads, making them ideal for structural connections, machinery assembly, and infrastructure projects requiring dependable heavy-duty fastening solutions.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC 1/2"-13 coarse threading. Complies with IFI 111/SAE J429 specifications for Grade 5 fasteners, ensuring consistent mechanical properties including Rockwell C22 hardness and 120,000 psi tensile strength. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance for restricted substance management. The black corrosion-resistant coating provides additional protection while maintaining the fastener's structural performance characteristics.
