The Lamp,incandescent, cataloged under National Stock Number 6240-01-040-1321, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. The manufacturer of record is Itt Schadow Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6240-01-040-1321 |
| Primary Part Number | 5522-00-024-020 |
| Item Name | Lamp,incandescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Manufacturer | Itt Schadow Inc |
| Status | ACTIVE |
| Bulb Light Transmission Characteristic | TRANSPARENT |
| Base Style | TELEPHONE SLIDE NUMBER FIVE |
| Rated Average Life | HOURS |
| Bulb Designator | T-1 1/4 |
| Filament Heavy Duty Service Rating | NOT RATED |
| Wattage Rating | 0.480 WATTS |
| Emitted Light Characteristic | WHITE |
| Light Output Rating | 0.064 SPHERICAL CANDLEPOWER NOMINAL SINGLE RATING |
| Bulb Style | T (TUBULAR) |
| Current Rating for Which Designed | 0.020 AMPERES NOMINAL |
| Voltage Rating | 24.000 VOLTS NOMINAL |
| Average Life Rating in Hours | 5000.0 |
| 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 |
|---|---|
| 5522-00-024-020 PRIMARY | Itt Schadow Inc (USA) |
| Reference | Meaning |
|---|---|
| 5522-24V-20MA | 5/9 Secondary reference Itt Schadow Inc |
NSN 6240-01-040-1321 is a Lamp,incandescent, manufactured by Itt Schadow Inc, classified under FSC 6240, Electric Lamps. Status: active.
NSN 6240-01-040-1321 has 1 manufacturer part number on file: 5522-00-024-020 (Itt Schadow Inc).
Key specifications for 5522-00-024-020: Bulb Light Transmission Characteristic: TRANSPARENT; Base Style: TELEPHONE SLIDE NUMBER FIVE; Rated Average Life: HOURS; Bulb Designator: T-1 1/4. 12 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.