Flange nut

Flange nuts, also known as serrated flange nuts or collar nuts, are mechanical fasteners designed with an integrated washer-like flange at the base. This flange distributes clamping pressure over a wider surface area, eliminating the need for a separate washer. The serrated teeth on the bearing surface provide a locking action that resists loosening from vibration. These nuts are typically manufactured in steel, stainless steel, or brass, with thread sizes ranging from M3 to M24 and various strength classes (e.g., 8, 10). They are available in hexagon or square head configurations and may feature zinc-plated or passivated finishes for corrosion resistance.

Flange nuts are widely used in industrial automation, electrical panel assembly, and machinery construction. Common applications include securing electrical components such as busbars, contactors, and terminal blocks within control cabinets. They are also employed in automotive chassis assembly, conveyor systems, and HVAC equipment. The self-locking design makes them ideal for environments subject to continuous vibration, such as motor mounts, pump installations, and robotic arms. In electrical installations, they ensure reliable grounding connections by maintaining consistent pressure on conductive surfaces.

Key subcategories include hexagon flange nuts (DIN 6923, DIN 6926), serrated flange nuts (DIN 6924), and thin flange nuts (DIN 936). Article codes typically follow a pattern like "FN-M8-10-SS" where "FN" denotes flange nut, "M8" indicates thread size, "10" represents strength class, and "SS" specifies stainless steel material. Other common codes include "FLN-M10-8-ZN" for zinc-plated versions or "SFN-M6-8-SERRATED" for serrated types. These codes help identify specific dimensions, materials, and locking features for precise procurement.

Our platform offers real-time pricing and express worldwide shipping for all flange nut variants. Each product includes detailed technical datasheets with thread dimensions, torque specifications, and material certifications. Our engineering team provides personalized support for selecting the correct nut type based on application requirements, including vibration resistance and environmental conditions. We maintain extensive stock of standard and metric sizes to ensure rapid delivery for industrial maintenance and production needs.