The Meter,time Totalizing, cataloged under National Stock Number 6645-01-030-5288, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Hughes Corporation Dba Mac Group, the Div Weschler Instruments. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-030-5288 |
| Primary Part Number | 240001AAAA |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Hughes Corporation Dba Mac Group, the Div Weschler Instruments |
| Status | ACTIVE |
| Electrical Movement Type | MOTOR |
| Body Diameter | 2.215 INCHES NOMINAL IN |
| Indicator Type | DRUM REGISTER |
| Terminal Quantity | 2 |
| Background Color | BLACK BACKGROUND ON HR WHEELS,WHITE BACKGROUND ON TENTHS WHEEL |
| Movement Type | ELECTRICAL |
| Current Type | AC |
| Terminal Type | STUD |
| Mounting Method | FLUSH |
| Smallest Increment Indicated | 0.10 |
| Operating Frequency | 60.0 HERTZ NOMINAL |
| Marking Color | WHITE NUMERALS FOR HOURS,BLACK NUMERAL FOR TENTHS |
| Maximum Measurement | 99999.90 |
| Hermetic Protection | NOT PROVIDED |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| Mounting Configuration | TWO 0.144 IN. MTG HOLES SPACED 1.480 IN. C TO C IN |
| Mounting Flange Diameter | 2.215 INCHES NOMINAL IN |
| Material | PLASTIC CASE |
| Body Depth | 3.420 INCHES NOMINAL IN |
| Mounting Type | PANEL |
| 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 |
|---|---|
| 240-001AAAA | Argo Turboserve Corporation Div Argo Turboserve Corp. (USA) |
| 240001AAAA PRIMARY | Hughes Corporation Dba Mac Group, the Div Weschler Instruments (USA) |
| 1600-316 | Airflo Instrument Company, the Dba Airflo Instrument Co (USA) |
| 136901035 | Eaton Corporation (USA) |
| Reference | Meaning |
|---|---|
| 240001AAAA | 5/9 Secondary reference Yokogawa Corporation of America |
| 50-240-001AAAA | 5/9 Secondary reference General Electric Co Instrument Products Section |
| A136901035 | 5/9 Secondary reference Eaton Corporation |
NSN 6645-01-030-5288 is a Meter,time Totalizing, manufactured by Hughes Corporation Dba Mac Group, the Div Weschler Instruments, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-030-5288 has 4 manufacturer part numbers on file: 240-001AAAA (Argo Turboserve Corporation Div Argo Turboserve Corp.), 240001AAAA (Hughes Corporation Dba Mac Group, the Div Weschler Instruments), 1600-316 (Airflo Instrument Company, the Dba Airflo Instrument Co), 136901035 (Eaton Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6645-01-485-4521. Verify interchangeability with system specifications before substitution.
Key specifications for 240001AAAA: Electrical Movement Type: MOTOR; Body Diameter: 2.215 INCHES NOMINAL IN; Indicator Type: DRUM REGISTER; Terminal Quantity: 2. 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.