The Lamp,incandescent, cataloged under National Stock Number 6240-00-155-8666, 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14 specifications, cited from the U.S. Government catalog. 17 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 6240-00-155-8666 |
| Item Name | Lamp,incandescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Status | ACTIVE |
| Bulb Light Transmission Characteristic | TRANSPARENT |
| Filament Designation | S-2 |
| Base Style | DOUBLE CONTACT BAYONET CANDELABRA |
| Rated Average Life | HOURS |
| Bulb Designator | G-8 |
| Filament Heavy Duty Service Rating | NOT RATED |
| Wattage Rating | 1.920 WATTS |
| Emitted Light Characteristic | COLORLESS |
| Light Output Rating | 1.300 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING |
| Light Center Length | 0.880 INCHES NOMINAL IN |
| Bulb Style | G (GLOBULAR) |
| Current Rating for Which Designed | 0.800 AMPERES NOMINAL |
| Voltage Rating | 2.400 VOLTS NOMINAL |
| Average Life Rating in Hours | 75.0 |
| 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 |
|---|---|
| 221454 | 5/1 Secondary reference General Motors Llc Dba General Motors Llc |
| 1491 | 5/9 Secondary reference General Electric Co Lamp Division of Consumer Products Group |
| 221454 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1491 | 5/1 Secondary reference U.S. Government activity |
| 1491 | 5/9 Secondary reference General Electric Co Miniature Lamp Products Dept Lighting Business Group |
| 221454 | 5/1 Secondary reference General Motors Corp |
| WL111 | 4/1 Identification reference U.S. Government activity |
| MS15568-1 | 2/2 Government specification standardization U.S. Government activity |
| 1491 | 5/1 Secondary reference Lamp Industry for Use with Industry Designations and Abbreviations for Lamps |
| L1491 | 5/9 Secondary reference General Motors Corp Delco Remy Div |
| 1491 | 5/9 Secondary reference General Electric Company |
| PL1491 | 5/9 Secondary reference Precision Lamp Inc |
| L1491 | 5/9 Secondary reference General Electric Co Miniature Lamp Products Dept Lighting Business Group |
| 87-0549 | 5/1 Secondary reference Finnigan Corporation |
| 221454 | 5/1 Secondary reference Army Weapons Command Attn Amswe-Ree-S |
| L1491 | 5/1 Secondary reference General Motors Llc Dba General Motors Llc |
| 1491 | 5/9 Secondary reference Daycoa Inc |
NSN 6240-00-155-8666 is a Lamp,incandescent, classified under FSC 6240, Electric Lamps. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4320-00-778-4849, 5180-01-705-5245. Verify interchangeability with system specifications before substitution.
Key specifications for 6240-00-155-8666: Bulb Light Transmission Characteristic: TRANSPARENT; Filament Designation: S-2; Base Style: DOUBLE CONTACT BAYONET CANDELABRA; 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.