The Clock,wall, cataloged under National Stock Number 6645-01-389-7944, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-389-7944 |
| Item Name | Clock,wall |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Mounting Method | FLUSH |
| Increment in Hours | 12.000 |
| Outside Diameter | 300.0 MILLIMETERS NOMINAL MM |
| Nondefinitive Spec/std Data | 2 SIZE AND A TYPE |
| Color | BLACK |
| Material | PLASTIC CASE |
| 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 |
|---|---|
| A-A-2883 SZ2TYA | 5/1 Secondary reference U.S. Government activity |
| A-A-2883 | 4/1 Identification reference Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
NSN 6645-01-389-7944 is a Clock,wall, classified under FSC 6645, Time Measuring Instruments. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 6645-01-389-7951, 6645-01-421-6898, 6645-01-421-6901. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-389-7944: Mounting Method: FLUSH; Increment in Hours: 12.000; Outside Diameter: 300.0 MILLIMETERS NOMINAL MM; Nondefinitive Spec/std Data: 2 SIZE AND A TYPE. 6 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.