S-90602A222 3/8"-16 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, ideal for high-stress structural and machinery applications.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Precise and secure fastening ensured by Class 3A thread fit and UNC coarse threading, reducing the risk of cross-threading and loosening under vibration.
• High durability and wear resistance from Rockwell C32 hardness, maintaining fastener integrity through repeated use and heavy loads.
• Enhanced grip and stability with the flanged head design, distributing clamping force evenly and eliminating the need for a separate washer.
• Reliable performance in demanding conditions as it meets IFI 111/SAE J429 specifications, ensuring consistent quality and industrial compliance.
• Easy installation and removal with the external hex drive and right-hand thread, compatible with standard tools for efficient assembly.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy-duty industrial settings, such as equipment vibration, high tensile loads, and corrosive exposure. The zinc yellow-chromate plated steel construction offers robust protection against rust and degradation, while the fully threaded UNC coarse thread design ensures maximum grip and resistance to loosening in dynamic applications. Ideal for use in construction machinery, automotive assemblies, and structural frameworks, it provides reliable fastening that minimizes maintenance downtime. The flanged feature enhances load distribution, reducing stress concentrations and improving joint integrity. By incorporating Class 3A thread fit and compliance with SAE J429 standards, this screw delivers consistent performance, making it a trusted choice for engineers and procurement specialists seeking durability and compliance in industrial hex bolts.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit for tight tolerances and UNC coarse threading (3/8"-16) to facilitate quick assembly. It meets IFI 111 SAE J429 specifications, ensuring reliability in mechanical properties and material quality. The zinc yellow-chromate plating provides corrosion resistance, aligning with common industrial requirements for environmental durability. While specific RoHS or REACH declarations are not provided, the materials and processes are selected for industrial compliance and performance in demanding applications.