S-98892A112 10-32 NAS1291C3M Flange Nuts

Key Features & Benefits at a Glance

• Superior locking reliability with distorted center lock thread technology, preventing loosening under vibration and dynamic loads in demanding applications.
• Exceptional strength and corrosion resistance from A286 stainless steel, ideal for high-temperature and harsh industrial environments.
• Precise Class 3B thread fit ensures tight, secure fastening with minimal risk of cross-threading, enhancing assembly integrity.
• Integrated flange design with 0.33" diameter distributes load evenly, reducing surface damage and eliminating the need for a separate washer.
• Full compliance with NAS1291C3M standards, guaranteeing consistent quality and performance for aerospace and precision engineering uses.
• REACH and RoHS 3 compliance ensures environmental safety and regulatory adherence for global supply chains.
• Pre-applied lubricant facilitates smooth installation, reducing torque requirements and preventing galling during assembly.

Professional Applications & Engineering Value

This A286 stainless steel flange lock nut is engineered to address critical challenges in aerospace, automotive, and heavy machinery applications where vibration resistance and thermal stability are paramount. The distorted thread locking mechanism provides a reliable, reusable securing solution that maintains clamp load without additional locking elements, reducing part count and assembly time. Its UNF fine thread and Class 3B fit deliver precise engagement, minimizing the risk of thread stripping in high-stress environments. The corrosion-resistant A286 material ensures long-term durability under extreme temperatures, making it an optimal choice for engine components, structural assemblies, and precision equipment that demand uncompromising performance and compliance with rigorous standards like NAS1291C3M.

Specification Summary & Compliance

This flange lock nut adheres to Class 3B thread fit for high precision and meets NAS1291C3M specifications, ensuring consistent manufacturing quality. It features a 10-32 UNF fine thread with right-hand direction and is compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental regulations. Dimensions include a 0.33" flange diameter, 1/4" width, and 3/16" height, with lubricant included for optimal installation performance.