The Smoke Signal, cataloged under National Stock Number 1370-01-490-5490, is classified within Federal Supply Class 1370 (Pyrotechnics) of the Ammunition and Explosives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 5 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 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 | 1370-01-490-5490 |
| Primary Part Number | 7402321 |
| Item Name | Smoke Signal |
| FSC / FSG | 1370 / 13 — Pyrotechnics |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Dot Proper Shipping Name | SIGNAL DEVICES, HAND |
| Dot Identification Number | UN0373 |
| Dot Registration Code | EX2002030072 |
| Hazardous Material Classification Code | 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION |
| Type/model Designation | MK 145 MOD 0 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) UN ID UN0373 · 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION · ships as SIGNAL DEVICES, HAND |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7402321 PRIMARY | Naval Sea Systems Command (USA) |
NSN 1370-01-490-5490 is a Smoke Signal, manufactured by Naval Sea Systems Command, classified under FSC 1370, Pyrotechnics. Status: active.
NSN 1370-01-490-5490 has 1 manufacturer part number on file: 7402321 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 6625-01-563-7930. Verify interchangeability with system specifications before substitution.
Key specifications for 7402321: Dot Proper Shipping Name: SIGNAL DEVICES, HAND; Dot Identification Number: UN0373; Dot Registration Code: EX2002030072; Hazardous Material Classification Code: 1.4 DEPARTMENT OF DEFENSE HAZARD CLASS DIVISION. 5 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 1370-01-490-5490 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.