S-90602A215 1/4"-20 x 1 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 for reliable performance in high-stress applications
- Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
- Precise thread engagement with Class 3A fit and UNC coarse spacing for secure fastening and vibration resistance
- Enhanced durability through Rockwell C32 hardness, maintaining structural integrity under repeated stress
- Optimized weight distribution with flange design that eliminates the need for separate washers
- Industry-standard compliance meeting SAE J429 specifications for consistent quality and interchangeability
- Versatile partial threading allowing for both clamping and alignment functions in assembly operations
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers critical engineering solutions for industrial applications where failure is not an option. The zinc yellow-chromate plated steel construction provides exceptional protection against corrosion in manufacturing environments, chemical processing, and outdoor equipment. The UNC coarse thread with Class 3A fit ensures rapid installation and reliable performance in vibration-prone machinery, while the partial threading design allows for precise clamping force distribution. The integrated flange head eliminates washer requirements, streamlining assembly processes in automotive, construction, and heavy equipment applications where space optimization and structural integrity are paramount.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread spacing (1/4"-20). This fastener meets SAE J429 specifications (IFI 111) for dimensional accuracy and mechanical properties. The Grade 8 classification guarantees consistent performance with 150,000 psi tensile strength and Rockwell C32 hardness. The zinc yellow-chromate plating provides RoHS and REACH compliant corrosion protection, ensuring environmental regulation adherence while maintaining superior surface durability.
