S-90409A160 1/2"-20 x 1" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 psi tensile strength for reliable performance in demanding applications
• Superior hardness and durability with Rockwell C32 rating to resist wear and deformation under heavy stress
• Precise thread engagement with Class 2A fit and UNF fine threading for secure fastening and vibration resistance
• Enhanced stability and distribution through the integrated flange design, reducing the need for separate washers
• Full threading along the 1" length ensures maximum grip and adjustability in various material thicknesses
• Heavy-duty Grade 8 classification guarantees consistent performance meeting SAE J429/IFI 111 standards
• Compliant with environmental regulations including RoHS 3 and REACH for safe use in regulated industries

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical reliability for heavy machinery, construction equipment, and automotive assemblies where failure is not an option. The steel construction combined with 150,000 psi tensile strength provides exceptional resistance to shear forces and dynamic loads. The UNF fine thread configuration offers superior vibration resistance compared to coarse threads, while the flanged design distributes clamping force over a wider area, preventing surface damage and maintaining joint integrity. With fully threaded 1" length and external hex drive, installation is streamlined for maintenance and production lines, reducing assembly time while ensuring consistent torque application. These industrial fasteners meet rigorous SAE J429 standards, making them ideal for critical connections in manufacturing, infrastructure, and transportation sectors.

Specification Summary & Compliance

This 1/2"-20 hex head screw features Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing complies with IFI 111/SAE J429 specifications for Grade 8 fasteners, guaranteeing consistent mechanical properties and performance. The product is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions.