NSN 1560-01-656-7921

An item of unique shapes and cross-sectional configurations specifically designed with dimensional tolerances and finishes. It may be metallic and/or nonmetallic and must be able to mate with or join to like items with aircraft application. The item may consist of more then one (1) piece to form an assembly. Do not use if a more specific item name exists. Excludes bracket (1), structural component, aircraft.