The Light,warning, cataloged under National Stock Number 6220-01-643-2123, is classified within Federal Supply Class 6220 (Electric Vehicular Lights and Fixtures) of the Lighting Fixtures and Lamps group. The manufacturer of record is Northrop Grumman Systems Corporation. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Light,warning |
| FSC / FSG | 6220 — Electric Vehicular Lights and Fixtures (FSG 62) |
| Manufacturers | Northrop Grumman Systems Corporation (CAGE 1L4J7) |
| Parameter | Value |
|---|---|
| NSN | 6220-01-643-2123 |
| Primary Part Number | 377-5004004-02 |
| Item Name | Light,warning |
| FSC / FSG | 6220 / 62 — Electric Vehicular Lights and Fixtures |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 377-5004004-02 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 377-5004004 | D/9 Drawing number reference only U.S. Government activity |
| 377-5004004-02 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6220-01-643-2123 is a Light,warning, manufactured by Northrop Grumman Systems Corporation, classified under FSC 6220, Electric Vehicular Lights and Fixtures. Status: active.
NSN 6220-01-643-2123 has 1 manufacturer part number on file: 377-5004004-02 (Northrop Grumman Systems Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 6220-01-643-4103, 6220-01-651-8462. Verify interchangeability with system specifications before substitution.
Possible hazard — SDS may be required (DLA HMIC P). 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.