The Lamp,incandescent, cataloged under National Stock Number 6240-01-054-6679, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6240-01-054-6679 |
| Item Name | Lamp,incandescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Status | ACTIVE |
| Bulb Light Transmission Characteristic | TRANSPARENT |
| Filament Designation | C-2F |
| Base Style | MINIATURE BAYONET |
| Rated Average Life | HOURS |
| Bulb Designator | T-4 1/2 |
| Filament Heavy Duty Service Rating | NOT RATED |
| Wattage Rating | 8.400 WATTS |
| Emitted Light Characteristic | COLORLESS |
| Light Output Rating | 6.000 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING |
| Light Center Length | 0.630 INCHES NOMINAL IN |
| Bulb Style | T (TUBULAR) |
| Current Rating for Which Designed | 0.300 AMPERES NOMINAL |
| Voltage Rating | 28.000 VOLTS NOMINAL |
| Average Life Rating in Hours | 500.0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 1495X | 5/1 Secondary reference Lamp Industry for Use with Industry Designations and Abbreviations for Lamps |
| MS25069-1495X | 2/2 Government specification standardization U.S. Government activity |
| 1495X | 5/1 Secondary reference U.S. Government activity |
| Z00.N7445110657 | 5/9 Secondary reference Daher Aerospace - Ex Socata |
| LP1495X | 5/9 Secondary reference Grimes Aerospace Company |
NSN 6240-01-054-6679 is a Lamp,incandescent, classified under FSC 6240, Electric Lamps. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6240-01-669-7082. Verify interchangeability with system specifications before substitution.
Key specifications for 6240-01-054-6679: Bulb Light Transmission Characteristic: TRANSPARENT; Filament Designation: C-2F; Base Style: MINIATURE BAYONET; Rated Average Life: HOURS. 14 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.
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.