The Timing Movement,mechanical, cataloged under National Stock Number 6645-01-508-4012, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-508-4012 |
| Item Name | Timing Movement,mechanical |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Interval Expiration Signalling Device | INCLUDED |
| Independently Operated Clock | NOT INCLUDED |
| Timer Type | MECHANICAL |
| Automatic Electric Circuit Control Switch | NOT INCLUDED |
| 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 |
|---|---|
| 30801-03 | 3/2 Design control — primary reference U.S. Government activity |
| 30801-03 | 5/9 Secondary reference Star Manufacturing International Inc. Dba Lang Manufacturing Company |
NSN 6645-01-508-4012 is a Timing Movement,mechanical, classified under FSC 6645, Time Measuring Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5315-01-514-5797. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-508-4012: Interval Expiration Signalling Device: INCLUDED; Independently Operated Clock: NOT INCLUDED; Timer Type: MECHANICAL; Automatic Electric Circuit Control Switch: NOT INCLUDED. 4 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.