The Meter,time Totalizing, cataloged under National Stock Number 6645-01-258-9272, is classified within Federal Supply Class 6645 (Time Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Dynalec Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6645-01-258-9272 |
| Primary Part Number | B1897 |
| Item Name | Meter,time Totalizing |
| FSC / FSG | 6645 / 66 — Time Measuring Instruments |
| Manufacturer | Dynalec Corporation |
| Status | ACTIVE |
| Electrical Movement Type | MOTOR |
| Indicator Type | DRUM REGISTER |
| Background Color | BLACK BACKGROUND |
| Movement Type | ELECTRICAL |
| Marking Color | WHITE MARKINGS |
| Unit Type | MOUNTED |
| Reset Feature | NOT PROVIDED |
| 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 |
|---|---|
| B1897 PRIMARY | Dynalec Corporation (USA) |
| Reference | Meaning |
|---|---|
| B1897 | 5/9 Secondary reference The Electric Tachometer Corp. |
NSN 6645-01-258-9272 is a Meter,time Totalizing, manufactured by Dynalec Corporation, classified under FSC 6645, Time Measuring Instruments. Status: active.
NSN 6645-01-258-9272 has 1 manufacturer part number on file: B1897 (Dynalec Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5999-01-568-6727. Verify interchangeability with system specifications before substitution.
Key specifications for B1897: Electrical Movement Type: MOTOR; Overall Height: 1.906 INCHES NOMINAL IN; Indicator Type: DRUM REGISTER; Background Color: BLACK BACKGROUND. 8 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.