S-94239A124 1/4"-20 x 1" IFI 111 High-Strength Grade 8 Steel Serrated-Flange Hex Head Screws
High-Strength Grade 8 Steel Serrated-Flange 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 Grade 8 rating and 150,000 psi tensile strength for reliable performance in high-stress environments.
- Superior corrosion resistance due to zinc yellow-chromate plating, extending service life in harsh or outdoor conditions.
- Secure anti-loosening performance from serrated locking flange, minimizing vibration-induced failures without additional locking components.
- Easy installation and removal with external hex drive and 3/8" head width, compatible with standard tools for efficient maintenance.
- Optimized thread engagement through UNC coarse thread and Class 2A fit, ensuring smooth assembly and consistent clamping force.
- Full-length threading provides uniform load distribution along the entire 1" length, enhancing joint integrity.
- Industry-standard compliance with IFI 111 and SAE J429 specifications, guaranteeing interchangeability and quality assurance.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in machinery assembly, structural frameworks, and automotive systems where vibration resistance and high tensile strength are paramount. The zinc yellow-chromate plated steel construction combats rust and chemical exposure, while the serrated flange eliminates the need for separate washers or locknuts, reducing part count and assembly time. Its UNC coarse thread and Class 2A fit enable quick, precise installation in coarse-grained materials, making it ideal for construction equipment, agricultural machinery, and transportation infrastructure that demand IFI 111 and SAE J429 compliance for safety and durability.
Specification Summary & Compliance
This fastener adheres to Class 2A thread fit tolerances and UNC coarse thread standards, ensuring dimensional accuracy and compatibility. Manufactured in accordance with IFI 111 and SAE J429 specifications, it meets rigorous industrial requirements for material properties and performance. The product is RoHS and REACH compliant, supporting environmentally conscious procurement policies without compromising on its 150,000 psi tensile strength and Rockwell C33 hardness.
