The Light,cockpit,aircraft, cataloged under National Stock Number 6220-01-321-9903, is classified within Federal Supply Class 6220 (Electric Vehicular Lights and Fixtures) of the Lighting Fixtures and Lamps group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6220-01-321-9903 |
| Primary Part Number | 5M2578-001 |
| Item Name | Light,cockpit,aircraft |
| FSC / FSG | 6220 / 62 — Electric Vehicular Lights and Fixtures |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Overall Diameter | 1.120 INCHES NOMINAL IN |
| Mounting Method | BRACKET(S) |
| Lamp Base Type Accommodated | SINGLE CONTACT BAYONET CANDELABRA |
| Wiring Provision Length | 168.0 INCHES NOMINAL SINGLE PROVISION IN |
| Wiring Provision Method | CABLE |
| Lamp Type Accommodated and Quantity | 1 INCANDESCENT |
| Lens Type and Quantity | 1 FLAT, ROUND |
| Voltage Rating in Volts | 6.000 AC MAXIMUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S2059 | Soderberg Manufacturing Company, Inc. Dba Soderberg Manufacturing (USA) |
| 5M2578-001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10150069 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 6220-01-321-9903 is a Light,cockpit,aircraft, manufactured by The Boeing Company Div Defense, classified under FSC 6220, Electric Vehicular Lights and Fixtures. Status: active.
NSN 6220-01-321-9903 has 2 manufacturer part numbers on file: S2059 (Soderberg Manufacturing Company, Inc. Dba Soderberg Manufacturing), 5M2578-001 (The Boeing Company Div Defense).
Key specifications for 5M2578-001: Overall Height: 1.526 INCHES NOMINAL IN; Overall Diameter: 1.120 INCHES NOMINAL IN; Mounting Method: BRACKET(S); Lamp Base Type Accommodated: SINGLE CONTACT BAYONET CANDELABRA. 8 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 6220-01-321-9903 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.