S-92316A216 1/4"-20 x 4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with Grade 8 strength rating and 150,000 psi tensile strength for critical heavy-duty applications
• Superior corrosion resistance through black-phosphate steel coating, extending service life in harsh industrial environments
• Enhanced driving torque transmission with external hex drive design and 3/8" head width for secure installation
• Precise thread engagement with Class 3A thread fit ensuring reliable fastening in demanding applications
• Integrated flange design eliminates need for separate washers while providing superior load distribution
• Optimized partial threading allows for precise clamping force control across the 4" length
• Industry-standard compatibility with UNC coarse threads (1/4"-20) for broad application across equipment and machinery

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these Grade 8 hex head screws deliver exceptional performance where failure is not an option. The black-phosphate steel construction provides superior corrosion resistance, making them ideal for construction equipment, agricultural machinery, and automotive assemblies exposed to harsh environments. The UNC coarse threading ensures rapid installation and reliable performance in high-vibration settings, while the flanged design distributes clamping force evenly, preventing surface damage and maintaining joint integrity. With partial threading along the 4" length, these screws offer precise control over clamping force, making them perfect for structural connections requiring specific grip lengths in industrial machinery and heavy equipment manufacturing.

Specification Summary & Compliance

This 1/4"-20 UNC thread fastener features Class 3A thread fit for precision engagement and meets SAE J429 specifications for Grade 8 mechanical properties. Manufacturing complies with IFI 111 standards ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant for environmental safety and regulatory acceptance in global markets.