S-90409A114 1/4"-20 x 1 1/4" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 PSI tensile strength for reliable performance in high-stress applications.
• Superior wear and deformation resistance due to Rockwell C32 hardness, ensuring long-term durability.
• Secure and stable fastening provided by the integrated flange, eliminating the need for separate washers.
• Easy installation and removal with the external hex drive and coarse UNC threads for quick assembly.
• Precise thread engagement with Class 2A fit, reducing cross-threading risks and ensuring consistent performance.
• Full thread coverage along the 1-1/4" length for maximum grip and distribution of clamping force.
• Compliance with industry standards including SAE J429 and IFI 111, guaranteeing quality and interchangeability.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers unmatched reliability in machinery, construction, and automotive assemblies. The steel material and fully threaded design ensure robust connections that withstand vibration and dynamic loads. The flanged feature increases bearing surface area, preventing surface damage and loosening under stress. With a coarse UNC thread and external hex drive, it offers efficient installation in tough environments, reducing downtime. Ideal for critical joints requiring 150,000 PSI tensile strength, it solves common failure points by maintaining integrity in high-torque scenarios.

Specification Summary & Compliance

This screw adheres to precise Class 2A thread fit tolerances and UNC coarse thread standards, ensuring compatibility and performance. It meets IFI 111 / SAE J429 specifications for material and mechanical properties. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free from hazardous substances, supporting safe and sustainable industrial use.