The Multiplexer Assembly, cataloged under National Stock Number 2040-01-032-9079, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2040-01-032-9079 |
| Primary Part Number | 52490 |
| Item Name | Multiplexer Assembly |
| FSC / FSG | 2040 / 20 — Marine Hardware and Hull Items |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 52490 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| M2120 | Microphase Corp (USA) |
| 885F052490 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 885F052490 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
NSN 2040-01-032-9079 is a Multiplexer Assembly, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
NSN 2040-01-032-9079 has 3 manufacturer part numbers on file: 52490 (L3 Technologies, Inc. Div L3 Keo), M2120 (Microphase Corp), 885F052490 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-335-2270. Verify interchangeability with system specifications before substitution.
Key specifications for 52490: End Item Identification: MARINE HARDWARE AND HULL ITEMS. 0 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.
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.