The Timer,interval, cataloged under National Stock Number 6645-00-409-2168, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-00-409-2168 |
| Item Name | Timer,interval |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Current Type | DC |
| Overall Diameter | 1.710 INCHES MAXIMUM IN |
| Control Type | SWITCH |
| Mounting Method | SURFACE |
| Voltage in Volts | 28.0 |
| Timer Type | ELECTRICAL |
| Color | BLACK, LUSTERLESS |
| Furnished Items | INTERVAL EXPIRATION SIGNALLING DEVICE |
| Operation Method | ELECTRONIC OPERATED |
| Reference Number Differentiating Characteristics | AS MODIFIED BY MFR SOURCE CONTROLLING DWG FSCM 26512,NO.A51E9119-1 |
| 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 |
|---|---|
| A51E9119-5 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51E9119-5 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
| 90402000-002 | 3/3 Design control — primary reference U.S. Government activity |
| A51E9119-5 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
NSN 6645-00-409-2168 is a Timer,interval, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-00-409-2168 has 1 manufacturer part number on file: A51E9119-5 (Northrop Grumman Systems Corporation).
Key specifications for 6645-00-409-2168: Overall Height: 3.870 INCHES MAXIMUM IN; Current Type: DC; Overall Diameter: 1.710 INCHES MAXIMUM IN; Control Type: SWITCH. 10 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.