S-90409A115 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 demanding applications
- Superior corrosion resistance and durability thanks to Grade 8 steel construction and Rockwell C32 hardness
- Secure fastening with reduced installation time through UNC coarse threading and Class 2A thread fit
- Enhanced stability and vibration resistance provided by the integrated flange design
- Easy installation and removal with standard external hex drive and 3/8" head width
- Optimized thread engagement with partial threading and 3/4" minimum thread length
- Compliance with industry standards including SAE J429 and environmental regulations
Professional Applications & Engineering Value
This Grade 8 hex head screw delivers outstanding engineering value for industrial applications requiring high-strength fastening solutions. The steel construction combined with Rockwell C32 hardness ensures exceptional durability against wear and environmental factors. The UNC coarse thread design provides superior grip in various materials while the flanged feature eliminates the need for separate washers, distributing clamp load effectively. With 150,000 psi tensile strength and partial threading, this fastener is ideal for heavy machinery, construction equipment, and automotive assemblies where vibration resistance and reliable performance are critical. The external hex drive allows for efficient installation using standard tools, reducing assembly time in production environments.
Specification Summary & Compliance
This 1/4"-20 hex head screw features precise Class 2A thread fit with UNC coarse threading and meets IFI 111/SAE J429 specifications. The fastener maintains dimensional accuracy with a 1 1/2" length and 9/16" flange diameter. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across industrial sectors. Manufacturing follows strict quality controls to maintain the specified Grade 8 strength classification and mechanical properties.
