The Transducer,sonar, cataloged under National Stock Number 5845-00-642-7872, is classified within Federal Supply Class 5845 (Underwater Sound Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is L3 Aviation Products, Inc. Dba L3 Technologies. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5845-00-642-7872 |
| Primary Part Number | 877421 |
| Item Name | Transducer,sonar |
| FSC / FSG | 5845 / 58 — Underwater Sound Equipment |
| Manufacturer | L3 Aviation Products, Inc. Dba L3 Technologies |
| Status | ACTIVE |
| Identifying Number | 62378 TYPE NO. |
| Filler Material | AIR |
| Impedance Rating in Ohms | 60.0 NOMINAL |
| Frequency at Which Impedance Rating Applies | 25.0 KILOHERTZ |
| Unit Type | MAGNETOSTRICTION |
| Polarization Method | PERMANENT MAGNET |
| Signal Cable Controlling Agency | BUSHIPS |
| Frequency Rating | 25.5 KILOHERTZ NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 877421 | L3 Aviation Products, Inc. Dba L3 Technologies (USA) |
| Reference | Meaning |
|---|---|
| AT354SQS11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5845-00-642-7872 is a Transducer,sonar, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 5845, Underwater Sound Equipment. Status: active.
NSN 5845-00-642-7872 has 1 manufacturer part number on file: 877421 (L3 Aviation Products, Inc. Dba L3 Technologies).
2 possible matches (shared part number, not a government interchangeability claim): 4320-01-386-4662, 4320-01-695-2379. Verify interchangeability with system specifications before substitution.
Key specifications for 877421: Identifying Number: 62378 TYPE NO.; Filler Material: AIR; Impedance Rating in Ohms: 60.0 NOMINAL; Frequency at Which Impedance Rating Applies: 25.0 KILOHERTZ. 8 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 5845-00-642-7872 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.