The NAS1149C0732R is an aerospace-standard flat washer used in aircraft structural and mechanical assemblies to distribute load under bolt or screw heads and protect mating surfaces from damage. It ensures even load distribution, reduces stress concentration, and helps maintain proper clamp force in vibration-prone aviation environments.

This washer is commonly used in airframe structures, brackets, equipment mounting, and general aircraft maintenance applications. It is typically manufactured from corrosion-resistant stainless steel (18-8 / AISI 304/316 depending on supplier spec), providing strength, durability, and resistance to environmental exposure.

The NAS1149 series is widely used as a standard replacement for AN960-type washers in many aircraft systems, making it a common MRO and OEM hardware component.

Key features include:

NAS1149C0732R aerospace flat washer
100 pcs maintenance pack
Used for load distribution in bolted joints
Protects aluminum and structural surfaces from wear
Compatible with 7/16" aircraft fasteners
Stainless steel construction (corrosion resistant)
Standard NAS1149 series aviation hardware
Suitable for vibration and cyclic load environments
Widely used in airframe and mechanical assemblies
Direct replacement per aerospace standards