The Meter,time Totalizing, cataloged under National Stock Number 6645-01-552-4570, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Instrument Masters. Government technical data includes 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-552-4570 |
| Primary Part Number | IMC-89120 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Instrument Masters |
| Status | ACTIVE |
| Overall Diameter | 3.750 INCHES NOMINAL IN |
| Mounting Method | SEMIFLUSH |
| Body Width | 1.660 INCHES NOMINAL IN |
| Body Length | 3.000 INCHES NOMINAL IN |
| Unit Type | MOUNTED |
| Mounting Configuration | THREE 0.15 IN DIA MTG HOLES WQUALLY SPACED, 2 HOLES LOCATED 30 DEG BELOW CTR LINE IN |
| Mounting Type | PANEL |
| 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 |
|---|---|
| PA20397/2150 ITEM 76 | Alstom Power Conversion Inc. (USA) |
| IMC-89120 PRIMARY | Instrument Masters (USA) |
NSN 6645-01-552-4570 is a Meter,time Totalizing, manufactured by Instrument Masters, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-552-4570 has 2 manufacturer part numbers on file: PA20397/2150 ITEM 76 (Alstom Power Conversion Inc.), IMC-89120 (Instrument Masters).
Key specifications for IMC-89120: Overall Diameter: 3.750 INCHES NOMINAL IN; Mounting Method: SEMIFLUSH; Body Width: 1.660 INCHES NOMINAL IN; Body Length: 3.000 INCHES NOMINAL IN. 7 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.