The Transducer,sonar, cataloged under National Stock Number 5845-00-642-6623, is classified within Federal Supply Class 5845 (Underwater Sound Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5845-00-642-6623 |
| Item Name | Transducer,sonar |
| FSC / FSG | 5845 / 58 — Underwater Sound Equipment |
| Status | ACTIVE |
| Identifying Number | MCOS-4 TYPE NO. |
| Filler Material | CASTOR OIL |
| Impedance Rating in Ohms | 200.0 NOMINAL |
| Frequency at Which Impedance Rating Applies | 12.0 KILOHERTZ |
| Unit Type | AMMONIUM DIHYDROGEN PHOSPHATE |
| Signal Cable Controlling Agency | BUSHIPS |
| Frequency Rating | 12.0 KILOHERTZ NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AT200BUQN1 | 3/2 Design control — primary reference U.S. Government activity |
| 08367REVG | 5/2 Secondary reference U.S. Government activity |
NSN 5845-00-642-6623 is a Transducer,sonar, classified under FSC 5845, Underwater Sound Equipment. Status: active.
Key specifications for 5845-00-642-6623: Identifying Number: MCOS-4 TYPE NO.; Filler Material: CASTOR OIL; Impedance Rating in Ohms: 200.0 NOMINAL; Frequency at Which Impedance Rating Applies: 12.0 KILOHERTZ. 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 5845-00-642-6623 has DEMIL Code D. 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.