S-92316A218 1/4"-28 x 1" IFI 111, SAE J429 High-Strength Grade 8 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in critical applications.
• Superior corrosion resistance from the black phosphate coating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• Precise Class 3A thread fit provides tighter tolerances for smoother assembly and enhanced vibration resistance, improving joint integrity.
• Flanged hex head design eliminates the need for a separate washer, distributing clamp load evenly and speeding up installation.
• Fully threaded shank offers maximum grip length and adjustability, ensuring secure fastening across varied material thicknesses.
• High hardness (Rockwell C32) resists wear and deformation, maintaining fastener integrity through repeated use and high-stress conditions.
• Compliance with SAE J429, RoHS 3, and REACH guarantees adherence to industry standards and environmental regulations, ensuring safe and reliable sourcing.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this Grade 8 hex head screw combines black phosphate steel with a UNF fine thread and Class 3A fit to address common challenges like vibration loosening and corrosion. The flanged design enhances stability by increasing the bearing surface, which is critical in machinery and automotive assemblies where uniform clamping force is essential. Its 150,000 psi tensile strength and full threading provide robust fastening in heavy-duty applications, from construction equipment to manufacturing fixtures, ensuring long-term reliability and reduced downtime. This screw is ideal for industrial fasteners requiring high strength and compliance with rigorous standards.

Specification Summary & Compliance

This screw features a 1/4"-28 UNF fine thread with Class 3A precision for accurate fit, and is manufactured to meet SAE J429 specifications for Grade 8 fasteners. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.