The Meter,time Totalizing, cataloged under National Stock Number 6645-01-174-0858, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Grasslin Controls Corp. Government technical data includes 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6645-01-174-0858 |
| Primary Part Number | RZ52H |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Grasslin Controls Corp |
| Status | ACTIVE |
| Movement Type | MECHANICAL |
| Unit Type | PORTABLE |
| 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 |
|---|---|
| RZ52H PRIMARY | Grasslin Controls Corp (USA) |
| Reference | Meaning |
|---|---|
| 121PA1344-054 | 5/1 Secondary reference Holmwood Highgate (aust) Pty Ltd |
| 69.MD000-1830 | 5/1 Secondary reference Rheinmetall Man Military Vehicles Australia Pty Ltd |
| RZ25H | 5/9 Secondary reference Grasslin Controls Corp |
| RZ52H | 5/9 Secondary reference I V O Industries |
NSN 6645-01-174-0858 is a Meter,time Totalizing, manufactured by Grasslin Controls Corp, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-174-0858 has 1 manufacturer part number on file: RZ52H (Grasslin Controls Corp).
Key specifications for RZ52H: Movement Type: MECHANICAL; Unit Type: PORTABLE; Measurement Unit: HOURS. 3 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.