Made from corrosion-resistant aircraft-grade steel or alloy material depending on application, the washer provides consistent performance under vibration, thermal cycling, and high-load conditions typical of certified aviation environments.

Key Characteristics
OEM aircraft standard washer (commonly used in Cessna / McCauley assemblies)
Designed for load distribution and surface protection in bolted joints
Manufactured to tight aerospace tolerances for fit and alignment
Resistant to corrosion, vibration, and fatigue in aircraft environments
Used in airframe, control surface, and accessory installations depending on IPC application

Purpose
The A2351 washer ensures even load distribution between fastener heads/nuts and aircraft structure, preventing material deformation and improving long-term joint reliability. It is a consumable maintenance item typically replaced during assembly, inspection, or overhaul work in accordance with the aircraft Illustrated Parts Catalog (IPC).