The Signal,smoke and Illumination, cataloged under National Stock Number 1370-01-045-0478, is classified within Federal Supply Class 1370 (Pyrotechnics) of the Ammunition and Explosives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1370-01-045-0478 |
| Primary Part Number | DL3139749 |
| Item Name | Signal,smoke and Illumination |
| FSC / FSG | 1370 / 13 — Pyrotechnics |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Smoke Burning Time | 40 TO 70 MINUTES |
| Model Number | MK121 MOD 0 |
| Net Explosive Weight | 1.8 STORAGE POUNDS AND 1.8 TRANSPORTATION POUNDS |
| Unit Package Type | BOX |
| Dot Registration Code | EX1987100526 |
| Unit Package Quantity | 4 |
| Illuminant Color | YELLOW |
| Dod Ammunition Code | 1370-L260 |
| Hazardous Material Classification Code | 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Unable to Decode | UNABLE TO DECODE |
| Illuminant Burning Time | 40 TO 65 MINUTES |
| Material | PLASTIC PHENOLIC CASE |
| Candlepower Intensity | 18000.0 |
| Gross Weight | 36.0 SHIPPING CONTAINER POUNDS AND 892.0 PALLET POUNDS |
| Smoke Color | YELLOW |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) 1.3 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| DL3139749 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1370-L260 | 6/9 Informative reference only U.S. Government activity |
NSN 1370-01-045-0478 is a Signal,smoke and Illumination, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 1370, Pyrotechnics. Status: active.
NSN 1370-01-045-0478 has 1 manufacturer part number on file: DL3139749 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 1370-01-398-9408. Verify interchangeability with system specifications before substitution.
Key specifications for DL3139749: Smoke Burning Time: 40 TO 70 MINUTES; Model Number: MK121 MOD 0; Net Explosive Weight: 1.8 STORAGE POUNDS AND 1.8 TRANSPORTATION POUNDS; Unit Package Type: BOX. 15 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). The government record also carries hazard data: DOT hazard class, UN number, or related classification fields. Special handling, storage, and shipping requirements apply per the cited government fields.
NSN 1370-01-045-0478 has DEMIL Code G. Demilitarization may be required before disposal or transfer to non-military entities.
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.