S-90602A254 1/2"-13 x 4 1/2" 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, ideal for high-stress structural and machinery applications.
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
- Reliable thread engagement due to UNC coarse threading and Class 2A fit, ensuring easy installation and vibration resistance.
- Enhanced stability and load distribution from the integrated flange, reducing the need for separate washers.
- High hardness rating of Rockwell C32, minimizing wear and deformation under heavy use.
- Convenient external hex drive for straightforward installation with common tools, speeding up assembly processes.
- Compliance with stringent standards including SAE J429/IFI 111, guaranteeing consistent quality and performance.
Professional Applications & Engineering Value
This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and industrial assembly where high tensile strength and corrosion resistance are paramount. The zinc yellow-chromate plated steel construction combats rust and chemical exposure, while the UNC coarse thread and partial threading design provide optimal grip and reduce the risk of cross-threading in tough materials. Its flanged head distributes clamping force evenly, preventing surface damage and loosening under dynamic loads. Ideal for securing structural frames, equipment bases, and automotive components, this fastener ensures long-term reliability and reduces maintenance needs in demanding industrial applications.
Specification Summary & Compliance
This 1/2"-13 UNC hex head screw features a Class 2A thread fit for precise dimensional accuracy and easy assembly. It is manufactured from zinc yellow-chromate plated steel and complies with SAE J429 and IFI 111 specifications, ensuring adherence to industrial standards for strength and durability. The fastener meets common regulatory requirements for material safety and performance in professional use.
