The Lamp,fluorescent, cataloged under National Stock Number 6240-01-461-2123, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. The manufacturer of record is Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6240-01-461-2123 |
| Primary Part Number | F40DX/RS/EW ALTO |
| Item Name | Lamp,fluorescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Manufacturer | Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company |
| Status | ACTIVE |
| Base Style | MEDIUM BIPIN (FLUORESCENT) |
| Rated Average Life | HOURS |
| Bulb Designator | T-12 |
| Wattage Rating | 34.000 WATTS |
| Emitted Light Characteristic | DAYLIGHT |
| Starting Characteristic | RAPID |
| Bulb Style | T (TUBULAR) |
| Average Life Rating in Hours | 20000.0 |
| 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 |
|---|---|
| F40DX/RS/EW ALTO PRIMARY | Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company (USA) |
| Reference | Meaning |
|---|---|
| 266593 | 5/9 Secondary reference Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company |
NSN 6240-01-461-2123 is a Lamp,fluorescent, manufactured by Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company, classified under FSC 6240, Electric Lamps. Status: active.
NSN 6240-01-461-2123 has 1 manufacturer part number on file: F40DX/RS/EW ALTO (Philips Electronics North America Corporation Dba Philips Lighting Div Philips Lighting Company).
Key specifications for F40DX/RS/EW ALTO: Base Style: MEDIUM BIPIN (FLUORESCENT); Rated Average Life: HOURS; Bulb Designator: T-12; Overall Length: 48.000 INCHES NOMINAL IN. 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.
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.