S-92979A134 1/4"-20 x 1 3/4" 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 tensile strength of 110,000 psi ensures reliable performance in demanding applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
- High hardness rating (Rockwell C22) provides excellent wear resistance and durability under repeated use.
- Flanged design eliminates the need for separate washers, simplifying installation and improving load distribution.
- Coarse UNC threading enables quick assembly and better performance in materials prone to vibration or thermal expansion.
- Class 2A thread fit ensures smooth installation while maintaining secure fastening in a wide range of conditions.
- Partial threading offers optimal grip length for applications requiring precise clamping force control.
Professional Applications & Engineering Value
This Grade 5 hex head screw delivers critical engineering value through its zinc-plated steel construction and UNC coarse thread design. The combination of 110,000 psi tensile strength and Rockwell C22 hardness addresses common industrial challenges of vibration loosening and material fatigue in heavy machinery, construction equipment, and automotive assemblies. The flanged screw design provides superior bearing surface distribution, preventing surface damage while the external hex drive enables high-torque installation with standard tools. These features make it ideal for structural applications where SAE J429 compliance and consistent performance under dynamic loads are essential requirements.
Specification Summary & Compliance
Manufactured to precise dimensional standards including Class 2A thread fit and UNC coarse thread spacing. This fastener meets IFI 111 specifications where identified as SAE J429, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental responsibility and material safety standards for industrial use worldwide.
