The Meter,time Totalizing, cataloged under National Stock Number 6645-01-006-6735, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-006-6735 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Electrical Movement Type | MOTOR |
| Body Diameter | 2.109 INCHES NOMINAL IN |
| Indicator Type | DRUM REGISTER |
| Terminal Quantity | 2 |
| Background Color | BLACK |
| Movement Type | ELECTRICAL |
| Current Type | AC |
| Terminal Type | SCREW |
| Mounting Method | FLUSH |
| Smallest Increment Indicated | 0.10 |
| Operating Frequency | 60.0 HERTZ NOMINAL |
| Marking Color | WHITE |
| Maximum Measurement | 9999.90 |
| Hermetic Protection | NOT PROVIDED |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| Mounting Configuration | THREE 0.141 IN. DIA MTG HOLES EQUALLY SPACED ON 1.266 IN. BOLT CIRCLE IN |
| Mounting Flange Diameter | 2.875 INCHES NOMINAL IN |
| Body Depth | 2.375 INCHES NOMINAL IN |
| Mounting Type | FLANGE |
| Voltage Rating | 120.0 VOLTS NOMINAL |
| Measurement Unit | HOURS |
| 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 |
|---|---|
| 4070-2 | 5/9 Secondary reference U.S. Government activity |
| 4070-0002 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6645-01-006-6735 is a Meter,time Totalizing, classified under FSC 6645, Time Measuring Instruments. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-471-5209, 1740-01-538-2619, 4720-01-540-3595. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-006-6735: Electrical Movement Type: MOTOR; Body Diameter: 2.109 INCHES NOMINAL IN; Indicator Type: DRUM REGISTER; Terminal Quantity: 2. 22 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.