S-90997A290 M11 Flange Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with A286 Stainless Steel construction, ideal for harsh environments and long-term reliability.
• Enhanced load distribution and vibration resistance thanks to the 17.8mm flange diameter and 3.2mm thickness, reducing the risk of loosening.
• High-strength performance from the Class 5H thread fit, ensuring precise, secure fastening in demanding applications.
• Efficient installation and removal with the 12-point external drive, allowing for high-torque application and easy access in confined spaces.
• Fine thread pitch (1.25mm) provides improved adjustment accuracy and better resistance to vibrational loosening compared to coarse threads.
• Right-hand metric threading (M11) ensures compatibility with standard metric bolts and simplifies sourcing for global projects.
• Compact design with 13mm width and 11mm height, offering a robust solution without excessive bulk.

Professional Applications & Engineering Value

This M11x1.25 flange nut is engineered to address critical challenges in high-stress and corrosive environments. Made from A286 Stainless Steel, it provides exceptional strength and resistance to oxidation, making it suitable for aerospace, automotive, and heavy machinery applications where reliability is paramount. The 12-point external drive design enables efficient torque application, reducing installation time and minimizing the risk of tool slippage. The fine thread and Class 5H thread fit ensure tight, secure connections that withstand vibrations and dynamic loads, preventing failures in critical assemblies. Its flange design distributes clamping force evenly, protecting surfaces and enhancing joint integrity in industrial settings.

Specification Summary & Compliance

This nut features Metric M11x1.25 fine threads with a Class 5H thread fit for precise tolerance and reliable performance. It complies with standard metric threading specifications and is manufactured from A286 Stainless Steel, which meets common industry requirements for high-temperature and corrosion-resistant applications. The product adheres to relevant standards for dimensional accuracy, including flange diameter (17.8mm) and thickness (3.2mm), ensuring consistency and compatibility. While specific compliance certifications (e.g., RoHS, REACH) should be verified per batch, the material and design support use in regulated industries demanding durability and safety.