The Tachometer,electric,nonself-Gene, cataloged under National Stock Number 6680-01-251-6841, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Custom Metering Company Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-251-6841 |
| Primary Part Number | 128C183AAP4 |
| Item Name | Tachometer,electric,nonself-Gene |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Custom Metering Company Inc |
| Status | ACTIVE |
| Scale Measurement Unit | REVOLUTIONS PER MINUTE |
| Scale Measurement Range | +0.0 TO 1500.0 |
| Installation Design | FIXED |
| 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 |
|---|---|
| 128C183AAP4 PRIMARY | Custom Metering Company Inc (USA) |
| Reference | Meaning |
|---|---|
| 128C183AAP4 | 5/9 Secondary reference Siemens Government Technologies, Inc. Dba Sgt Dresser-Rand Div Sgt Dresser-Rand |
NSN 6680-01-251-6841 is a Tachometer,electric,nonself-Gene, manufactured by Custom Metering Company Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-251-6841 has 1 manufacturer part number on file: 128C183AAP4 (Custom Metering Company Inc).
Key specifications for 128C183AAP4: Scale Measurement Unit: REVOLUTIONS PER MINUTE; Scale Measurement Range: +0.0 TO 1500.0; Installation Design: FIXED. 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.