The NAS1149D0363J 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 is commonly used with #10 size fasteners and helps maintain consistent clamp load while reducing stress concentration and wear in bolted joints.

This washer is part of the NAS1149 aluminum series and corresponds closely to AN960JD10 equivalents, making it widely interchangeable in many aircraft maintenance applications. It is typically manufactured from 2024-T3 aluminum alloy with a chemical conversion or anodized coating for corrosion resistance and durability in aviation environments.

It is widely used in airframe structures, interior installations, brackets, and general aircraft maintenance where lightweight, corrosion-resistant fastening hardware is required.

Key features include:

NAS1149D0363J aerospace flat washer
100 pcs maintenance pack
Used for load distribution in bolted joints
Protects surfaces from wear and deformation
Compatible with #10 aircraft fasteners
Aluminum alloy (typically 2024-T3) construction
Corrosion-resistant chemical conversion/anodized finish
Equivalent to AN960JD10 in many applications
Suitable for airframe and mechanical assemblies
Direct replacement per NAS/MS aircraft standards