The Lamp,incandescent, cataloged under National Stock Number 6240-01-564-8543, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6240-01-564-8543 |
| Item Name | Lamp,incandescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Status | ACTIVE |
| Bulb Light Transmission Characteristic | TRANSLUCENT |
| Base Style | MEDIUM SCREW |
| Rated Average Life | HOURS |
| Bulb Diameter | 21.0 MILLIMETERS NOMINAL MM |
| Bulb Designator | A-21 |
| Filament Heavy Duty Service Rating | ROUGH SERVICE |
| Wattage Rating | 100.000 WATTS |
| Light Output Rating | 11.800 LUMENS NOMINAL SINGLE RATING |
| Voltage Rating | 120.000 VOLTS NOMINAL |
| Average Life Rating in Hours | 1000.0 |
| 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 |
|---|---|
| W-L-101/77 | 2/2 Government specification standardization U.S. Government activity |
NSN 6240-01-564-8543 is a Lamp,incandescent, classified under FSC 6240, Electric Lamps. Status: active.
Key specifications for 6240-01-564-8543: Bulb Light Transmission Characteristic: TRANSLUCENT; Base Style: MEDIUM SCREW; Rated Average Life: HOURS; Bulb Diameter: 21.0 MILLIMETERS NOMINAL MM. 10 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.