The Timer,sequential, cataloged under National Stock Number 6645-01-177-4823, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-177-4823 |
| Item Name | Timer,sequential |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Frequency in Hertz | 50.0 OR 60.0 |
| Control Type | RESET |
| Mounting Method | FLUSH OR PLUG-IN LOCATION NOT OTHERWISE SPECIFIED |
| Voltage in Volts | 120.0 |
| Timer Type | ELECTRICAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 328C200Q10XX | 5/9 Secondary reference Automatic Timing and Controls Co Div of Sycon Corp |
| 328A200Q10XX | 5/9 Secondary reference Automatic Timing and Controls Co Div of Sycon Corp |
| 328D200F10XX | 3/9 Design control — primary reference Automatic Timing and Controls Co Div of Sycon Corp |
NSN 6645-01-177-4823 is a Timer,sequential, classified under FSC 6645, Time Measuring Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5945-01-250-8830, 5945-01-286-5135. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-177-4823: Frequency in Hertz: 50.0 OR 60.0; Control Type: RESET; Mounting Method: FLUSH OR PLUG-IN LOCATION NOT OTHERWISE SPECIFIED; Voltage in Volts: 120.0. 5 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.