The 406-527 is a Piper OEM aircraft nut used as a standard threaded fastener component in various aircraft structural and mechanical assemblies. It is designed to mate with corresponding bolts or screws to provide secure clamping force and maintain joint integrity under vibration and operational loads.

In Piper aircraft applications, nuts like the 406-527 are commonly used in airframe structures, landing gear assemblies, flight control systems, and equipment mounting points, depending on aircraft model configuration. Its primary function is to provide a reliable threaded locking interface that maintains proper preload in bolted joints.

Depending on the specific application, this nut may be used with a cotter pin, locking feature, or paired with a locking washer to prevent loosening due to vibration, cyclic loading, and thermal expansion.

Manufactured to Piper OEM specifications, the 406-527 is typically made from aircraft-grade steel or corrosion-resistant alloy steel, often with protective coatings such as cadmium plating, zinc plating, or equivalent corrosion-resistant finishes to ensure durability in aviation environments.

Because it is part of structural and sometimes flight-critical assemblies, correct torque application and installation procedure are essential for maintaining airworthiness and joint reliability.

Key features include:

Piper 406-527 aircraft nut (OEM fastener component)
Provides secure threaded fastening in aircraft assemblies
Used in airframe, landing gear, and control system structures
Maintains clamping force under vibration and load conditions
Compatible with bolts and safety locking methods (e.g., cotter pins)
Material: aircraft-grade steel or corrosion-resistant alloy steel
Protective corrosion-resistant coating (application dependent)
Designed for vibration and cyclic load environments
Critical for maintaining joint integrity and structural safety
Direct replacement part per Piper IPC specifications