The Switching System Au, cataloged under National Stock Number 5820-01-309-6744, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Thomson Inc Div Grass Valley. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5820-01-309-6744 |
| Primary Part Number | MODEL 400 |
| Item Name | Switching System Au |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Thomson Inc Div Grass Valley |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL C — Remove/Demil Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MODEL 400 PRIMARY | Thomson Inc Div Grass Valley (USA) |
NSN 5820-01-309-6744 is a Switching System Au, manufactured by Thomson Inc Div Grass Valley, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-309-6744 has 1 manufacturer part number on file: MODEL 400 (Thomson Inc Div Grass Valley).
2 possible matches (shared part number, not a government interchangeability claim): 4940-01-310-0264, 6630-01-462-4878. Verify interchangeability with system specifications before substitution.
Key specifications for MODEL 400: End Item Identification: IEWS/OBS. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5820-01-309-6744 has DEMIL Code C. 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.