The Lamp,incandescent, cataloged under National Stock Number 6240-01-430-6931, is classified within Federal Supply Class 6240 (Electric Lamps) of the Lighting Fixtures and Lamps group. The manufacturer of record is Macgregor Sweden Ab. Government technical data includes 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 6240-01-430-6931 |
| Primary Part Number | A21044 |
| Item Name | Lamp,incandescent |
| FSC / FSG | 6240 / 62 — Electric Lamps |
| Manufacturer | Macgregor Sweden Ab |
| Status | ACTIVE |
| Rated Average Life | HOURS |
| Filament Heavy Duty Service Rating | NOT RATED |
| Emitted Light Characteristic | GREEN |
| 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 |
|---|---|
| A21044 PRIMARY | Macgregor Sweden Ab (SWE) |
| Reference | Meaning |
|---|---|
| A21044 | 3/9 Design control — primary reference Tts Marine Ab Formerly Tts Ships Equipment Ab Div Dry Cargo Handling |
| 10990/05A/830 | D/9 Drawing number reference only Hamworthy Kse Ab |
| A21044 | 5/9 Secondary reference Tts Marine Ab |
| 105-384 | 5/9 Secondary reference Hamworthy Kse Ab |
NSN 6240-01-430-6931 is a Lamp,incandescent, manufactured by Macgregor Sweden Ab, classified under FSC 6240, Electric Lamps. Status: active.
NSN 6240-01-430-6931 has 1 manufacturer part number on file: A21044 (Macgregor Sweden Ab).
4 possible matches (shared part number, not a government interchangeability claim): 6240-01-430-6937, 5330-01-432-9313, 2540-01-522-2431. Verify interchangeability with system specifications before substitution.
Key specifications for A21044: Rated Average Life: HOURS; Filament Heavy Duty Service Rating: NOT RATED; Emitted Light Characteristic: GREEN; Special Features: USED ON A PUMPSTARTER FOR HOISTABLE RAMPS. 3 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.