S-90997A900 3/8"-16 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with A286 stainless steel construction, ensuring long-term reliability in harsh environments
• Enhanced load distribution from the 5/8" flange diameter, reducing surface pressure and preventing joint loosening
• Precision thread engagement with Class 3B fit for secure, vibration-resistant assemblies in critical applications
• High-torque capability through the external 12-point drive, allowing efficient installation with standard tools
• Optimized strength-to-weight ratio with 0.09" flange thickness, providing robust performance without unnecessary bulk
• Reliable coarse thread design (UNC 3/8"-16) for quick assembly and reduced cross-threading risks in industrial settings
• Standard hex profile compatibility ensuring easy integration with existing wrench sets and maintenance procedures

Professional Applications & Engineering Value

This A286 stainless steel flange nut delivers exceptional performance in demanding industrial environments where corrosion resistance and mechanical strength are paramount. The external 12-point drive system enables high-torque installation in confined spaces, while the integrated 5/8" flange eliminates the need for separate washers, reducing assembly time and component count. Engineered with Class 3B thread fit, this fastener maintains precise tolerances in vibration-prone applications such as heavy machinery, automotive systems, and aerospace assemblies. The coarse UNC thread profile ensures rapid installation and superior resistance to loosening under dynamic loads, making it ideal for maintenance-critical operations where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3B thread fit precision and UNC 3/8"-16 coarse thread specifications. The fastener features a 5/8" flange diameter with 0.09" thickness and standard 7/16" width across flats. Complies with industry-standard dimensional requirements for inch system fasteners and is manufactured from premium A286 stainless steel for consistent performance. Meets relevant industrial specifications for high-strength applications and demonstrates compliance with material quality standards for corrosion-resistant components.