The Acoustic Device,cou, cataloged under National Stock Number 5845-01-309-8272, is classified within Federal Supply Class 5845 (Underwater Sound Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 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 | 5845-01-309-8272 |
| Primary Part Number | 6658820 |
| Item Name | Acoustic Device,cou |
| FSC / FSG | 5845 / 58 — Underwater Sound Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | MK 1 MOD 1 USED IN CONFUSING ENEMY SONAR DETECTION |
| Precious Material | SILVER |
| Package Nominal Overall Diameter | 8.750 INCHES IN |
| Package Nominal Overall Length and Type | 121.000 INCHES SHIPPING CONTAINER IN |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Gross Weight | 468.750 SHIPPING CONTAINER POUNDS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL G — Ammunition & Explosives |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Part Number | Manufacturer |
|---|---|
| 6658820 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5845-01-309-8272 is a Acoustic Device,cou, manufactured by Naval Sea Systems Command, classified under FSC 5845, Underwater Sound Equipment. Status: active.
NSN 5845-01-309-8272 has 1 manufacturer part number on file: 6658820 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 6680-01-546-8326. Verify interchangeability with system specifications before substitution.
Key specifications for 6658820: General Characteristics Item Description: MK 1 MOD 1 USED IN CONFUSING ENEMY SONAR DETECTION; Precious Material: SILVER; Package Nominal Overall Diameter: 8.750 INCHES IN; Package Nominal Overall Length and Type: 121.000 INCHES SHIPPING CONTAINER IN. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5845-01-309-8272 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.