The Meter,time Totalizing, cataloged under National Stock Number 6645-01-174-0859, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Essex Products Group, Inc. Dba Industrial Timer Company. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 6645-01-174-0859 |
| Primary Part Number | C5/120V60HZ |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Essex Products Group, Inc. Dba Industrial Timer Company |
| Status | ACTIVE |
| Electrical Movement Type | MOTOR |
| Body Diameter | 2.875 INCHES NOMINAL IN |
| Indicator Type | DRUM REGISTER |
| Movement Type | ELECTRICAL |
| Current Type | AC |
| Mounting Method | FLUSH |
| Smallest Increment Indicated | 1.10 |
| Operating Frequency | 60.0 HERTZ NOMINAL |
| Maximum Measurement | 999.90 |
| Mounting Flange Width | 3.250 INCHES NOMINAL IN |
| Unit Type | MOUNTED |
| Reset Feature | PROVIDED |
| Mounting Configuration | FOUR MTG HOLES 5/32 IN. DIA,EQUALLY SPACED 2-3/4 IN. APART C TO C IN |
| Flange Height | 3.250 INCHES NOMINAL IN |
| Body Depth | 3.250 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 |
| Part Number | Manufacturer |
|---|---|
| 924275-1 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| C5/120V60HZ PRIMARY | Essex Products Group, Inc. Dba Industrial Timer Company (USA) |
NSN 6645-01-174-0859 is a Meter,time Totalizing, manufactured by Essex Products Group, Inc. Dba Industrial Timer Company, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-174-0859 has 2 manufacturer part numbers on file: 924275-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), C5/120V60HZ (Essex Products Group, Inc. Dba Industrial Timer Company).
1 possible match (shared part number, not a government interchangeability claim): 3940-01-327-1120. Verify interchangeability with system specifications before substitution.
Key specifications for C5/120V60HZ: Electrical Movement Type: MOTOR; Body Diameter: 2.875 INCHES NOMINAL IN; Indicator Type: DRUM REGISTER; Movement Type: ELECTRICAL. 18 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.