S-90997A954 1/2"-20 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with A286 Stainless Steel construction, ensuring long-term reliability in harsh environments
• Enhanced torque application through the 12-point external drive design, allowing for precise tightening in confined spaces
• Exceptional thread engagement with Class 3B fine UNF threads, providing vibration resistance and secure fastening
• Integrated flange design with 53/64" diameter, distributing load evenly and eliminating the need for separate washers
• High-temperature performance due to A286 material properties, maintaining strength in demanding thermal conditions
• Standard hex nut profile ensuring compatibility with common wrench sizes and industrial tooling
• Right-hand thread direction for straightforward installation and removal in standard assembly applications

Professional Applications & Engineering Value

This A286 Stainless Steel flange nut delivers critical performance advantages in demanding industrial settings where corrosion resistance and high-strength fastening are paramount. The 12-point external drive enables superior torque transmission in aerospace, automotive, and heavy machinery applications where access limitations exist. With fine UNF thread spacing and Class 3B thread fit, it ensures precise alignment and vibration resistance in dynamic load conditions. The integrated flange design provides stable bearing surface distribution, reducing stress concentration and preventing loosening under extreme operational stresses. Engineered for high-temperature environments, this fastener maintains structural integrity where thermal cycling would compromise ordinary fasteners.

Specification Summary & Compliance

Manufactured to precise dimensional standards including 1/2"-20 UNF fine threads with Class 3B thread fit for exceptional tolerance control. Features a 53/64" flange diameter and 0.13" flange thickness with standard hex nut profile. Complies with UNF thread standards and manufactured under strict quality controls. Meets industry requirements for high-strength applications and is suitable for use in compliance with various industrial specifications for critical fastening applications.