The Meter,time Totalizing, cataloged under National Stock Number 6645-01-303-6792, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-303-6792 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Status | ACTIVE |
| Electrical Movement Type | SYNCHRONOUS MOTOR |
| Body Diameter | 0.650 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Indicator Type | DRUM REGISTER |
| Terminal Quantity | 2 |
| Background Color | BLACK |
| Movement Type | ELECTRICAL |
| Current Type | AC |
| Terminal Type | HOOK |
| Mounting Method | SEMIFLUSH |
| Smallest Increment Indicated | 1.00 |
| Operating Frequency | 60.0 HERTZ NOMINAL |
| Marking Color | WHITE |
| Maximum Measurement | 9999.00 |
| Hermetic Protection | NOT PROVIDED |
| Specification/standard Data | 81349-MIL-M-7793/4 GOVERNMENT SPECIFICATION |
| Body Length | 1.094 INCHES MAXIMUM IN |
| Mounting Flange Width | 0.928 INCHES MAXIMUM IN |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| Mounting Configuration | TWO 0.125 IN. DIA. HOLES SPACED 1.000 IN APART IN |
| Flange Height | 0.188 INCHES NOMINAL IN |
| Test Data Document | 81349-MIL-M-7793 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.). |
| Mounting Type | FLANGE |
| Voltage Rating | 115.0 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 |
|---|---|
| MIL-M-7793/4 | 4/1 Identification reference U.S. Government activity |
| M7793/4-009 | 2/2 Government specification standardization U.S. Government activity |
NSN 6645-01-303-6792 is a Meter,time Totalizing, classified under FSC 6645, Time Measuring Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6645-01-361-2495. Verify interchangeability with system specifications before substitution.
Key specifications for 6645-01-303-6792: Electrical Movement Type: SYNCHRONOUS MOTOR; Body Diameter: 0.650 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN; Indicator Type: DRUM REGISTER; Terminal Quantity: 2. 25 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.