The Switch,telephone,crossbar, cataloged under National Stock Number 5805-00-357-0639, is classified within Federal Supply Class 5805 (Telephone and Telegraph Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Lucent Technologies Inc Corporate Headquarters. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5805-00-357-0639 |
| Primary Part Number | 181815 |
| Item Name | Switch,telephone,crossbar |
| FSC / FSG | 5805 / 58 — Telephone and Telegraph Equipment |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Electrical Power Source Relationship | OPERATING |
| Action Type | ROTARY |
| 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 |
|---|---|
| 181815 PRIMARY | Lucent Technologies Inc Corporate Headquarters (USA) |
| Reference | Meaning |
|---|---|
| 181815 | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| 181815 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
NSN 5805-00-357-0639 is a Switch,telephone,crossbar, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5805, Telephone and Telegraph Equipment. Status: active.
NSN 5805-00-357-0639 has 1 manufacturer part number on file: 181815 (Lucent Technologies Inc Corporate Headquarters).
2 possible matches (shared part number, not a government interchangeability claim): 6620-00-415-2768, 1650-00-621-0573. Verify interchangeability with system specifications before substitution.
Key specifications for 181815: Electrical Power Source Relationship: OPERATING; Action Type: ROTARY; End Item Identification: CENTRAL OFFICE TELEPHONE,AUTOMATIC AN/TTC-38(V)1. 2 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.