The Cover,lens, cataloged under National Stock Number 5821-00-421-8946, is classified within Federal Supply Class 5821 (Radio and Television Communication Equipment, Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5821-00-421-8946 |
| Item Name | Cover,lens |
| FSC / FSG | 5821 / 58 — Radio and Television Communication Equipment, Airborne |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,ANODIZED,6.380 IN. DIA,0.090 IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 709-1059 | 3/9 Design control — primary reference Corning Oca Corp |
NSN 5821-00-421-8946 is a Cover,lens, classified under FSC 5821, Radio and Television Communication Equipment, Airborne. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4320-01-262-5220. Verify interchangeability with system specifications before substitution.
Key specifications for 5821-00-421-8946: General Characteristics Item Description: ALUMINUM ALLOY,ANODIZED,6.380 IN. DIA,0.090 IN. H IN. 1 specification is 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.