The Meter,time Totalizing, cataloged under National Stock Number 6645-01-595-3945, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-595-3945 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| 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 |
|---|---|
| 28103 | 5/9 Secondary reference Hobbs Corp |
| 28103 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6645-01-595-3945 is a Meter,time Totalizing, classified under FSC 6645, Time Measuring Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5970-01-633-0246, 5120-01-669-1565. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-595-3945: Special Features: OP VOLTAGE: 90 TO 264 VAC; FREQ: 50/60 HZ; TEMP RANGE: -40 DEG TO +185 DEG F; RECORDS TIME 0 TO 99,999.9 HRS VAC; Part Name Assigned by Controlling Agency: HOBBS MULTI-RANGE QUARTZ HOUR METER. 0 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.