The Telephone Circuit,line Relay, cataloged under National Stock Number 5805-00-503-3340, is classified within Federal Supply Class 5805 (Telephone and Telegraph Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5805-00-503-3340 |
| Item Name | Telephone Circuit,line Relay |
| FSC / FSG | 5805 / 58 — Telephone and Telegraph Equipment |
| Status | ACTIVE |
| FSC Application Data | MANUAL TELEPHONE CENTRAL OFFICE |
| Nondefinitive Spec/std Data | NO. TA-224/TTC TYPE |
| Type/model Designation | AN/TTC-7 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 589588 | 5/9 Secondary reference Itt Telecom Products Corp Network Systems Div |
| TA224TCC | 5/1 Secondary reference U.S. Government activity |
| 601943 | 5/1 Secondary reference Stromberg-Carlson Corp a Plessey Telecommunications Co |
| 601943 | 5/9 Secondary reference Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc |
| MILT11659 | 4/1 Identification reference U.S. Government activity |
| TA224TTC | 2/2 Government specification standardization U.S. Government activity |
| TA224ATTC | 5/1 Secondary reference U.S. Government activity |
NSN 5805-00-503-3340 is a Telephone Circuit,line Relay, classified under FSC 5805, Telephone and Telegraph Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5805-00-503-3349, 5340-01-355-2639. Verify interchangeability with system specifications before substitution.
Key specifications for 5805-00-503-3340: Overall Height: 26.625 INCHES NOMINAL IN; FSC Application Data: MANUAL TELEPHONE CENTRAL OFFICE; Overall Length: 31.3125 INCHES NOMINAL IN; Overall Width: 17.000 INCHES NOMINAL IN. 3 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 5805-00-503-3340 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.