The Meter,time Totalizing, cataloged under National Stock Number 6645-01-137-7974, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Safran Electronics & Defense. Government technical data includes 23 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-137-7974 |
| Primary Part Number | K19205C3A |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Safran Electronics & Defense |
| Status | ACTIVE |
| Electrical Movement Type | SYNCHRONOUS MOTOR |
| Indicator Type | DRUM REGISTER |
| Terminal Quantity | 2 |
| Background Color | BLACK BACKGROUND |
| Movement Type | ELECTRICAL |
| Current Type | AC |
| Terminal Type | SOLDER |
| Mounting Method | SEMIFLUSH |
| Body Width | 0.500 INCHES NOMINAL IN |
| Smallest Increment Indicated | 0.01 |
| Operating Frequency | 400.0 HERTZ NOMINAL |
| Marking Color | WHITE NUMERALS |
| Maximum Measurement | 9999.00 |
| Hermetic Protection | PROVIDED |
| Body Length | 1.094 INCHES MAXIMUM IN |
| Mounting Flange Width | 1.062 INCHES NOMINAL IN |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| Mounting Configuration | TWO MTG HOLES ON EITHER SIDE OF FLANGE SPACED 0.812 IN. CENTER TO CENTER,0.125 IN. DIA. HOLES IN |
| Flange Height | 0.375 INCHES NOMINAL IN |
| Mounting Type | FLANGE |
| Voltage Rating | 29.0 VOLTS MAXIMUM |
| 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 |
| Part Number | Manufacturer |
|---|---|
| K19205C3A | Safran Electronics & Defense (FRA) |
| Reference | Meaning |
|---|---|
| K19205C3A | 5/9 Secondary reference Safran |
| K19205C3 | 3/9 Design control — primary reference U.S. Government activity |
NSN 6645-01-137-7974 is a Meter,time Totalizing, manufactured by Safran Electronics & Defense, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-137-7974 has 1 manufacturer part number on file: K19205C3A (Safran Electronics & Defense).
Key specifications for K19205C3A: Electrical Movement Type: SYNCHRONOUS MOTOR; Indicator Type: DRUM REGISTER; Terminal Quantity: 2; Background Color: BLACK BACKGROUND. 23 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.