The Spacer,special Shaped, cataloged under National Stock Number 5365-01-288-1643, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Aerospace Canada Ltd. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-288-1643 |
| Primary Part Number | 21579-1 |
| Item Name | Spacer,special Shaped |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Goodrich Aerospace Canada Ltd |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5365-01-288-1643 is a Spacer,special Shaped, manufactured by Goodrich Aerospace Canada Ltd, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-288-1643 has 2 manufacturer part numbers on file: 21579-1 (Goodrich Aerospace Canada Ltd), 21579-1 (Goodrich Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6750-01-427-2276. Verify interchangeability with system specifications before substitution.
Key specifications for 21579-1: Special Features: 7075 ALUMINUM ALLOY,T73 OR ALUMINUM ALLOY T6, ANODIZE PER MIL-A-8625 TYPE 2, CLASS 1; 9.800 IN. LG; 1.870 IN. WIDE IN. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.