The Tachometer,mechanical,fixed Moun, cataloged under National Stock Number 6680-00-445-7742, 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 Sterling Engine Co Inc. Government technical data includes 24 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-445-7742 |
| Primary Part Number | BM2167 |
| Item Name | Tachometer,mechanical,fixed Moun |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Sterling Engine Co Inc |
| Status | ACTIVE |
| Scale Quantity | 1 |
| Major Graduation Color | BLACK |
| Overall Diameter | 3.625 INCHES NOMINAL IN |
| Dial Illumination | NOT PROVIDED |
| Drive Connection Type | SLOTTED |
| Scale Smallest Increment | 50.0 REVOLUTIONS PER MINUTE |
| Shaft Rotation Direction | CLOCKWISE |
| Dial Quantity | 1 |
| Totalizing Mechanism | NOT PROVIDED |
| Scale Measurement Unit | REVOLUTIONS PER MINUTE |
| Pointer Quantity | 1 |
| Mounting Feature Type | INSERT |
| Unit Type | CENTRIFUGAL |
| Pointer Color | BLACK |
| Case Shape | ROUND |
| Scale Measurement Range | +150.0 TO 1800.0 |
| Scale Finish | ANY ACCEPTABLE |
| Ahead-Astern Semaphore | NOT PROVIDED |
| Pointer Finish | ANY ACCEPTABLE |
| Unable to Decode | UNABLE TO DECODE |
| Dial Background Color | WHITE |
| Mounting Type | PANEL |
| Operating Range | +150.0 TO 1800.0 REVOLUTIONS PER MINUTE |
| Minor Graduation Color | BLACK |
| 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 |
|---|---|
| BM2167 PRIMARY | Sterling Engine Co Inc (USA) |
| Reference | Meaning |
|---|---|
| BM2167 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
| A-50G-18-F1/2-1 | 5/9 Secondary reference Norma Pennsylvania Inc. Div Breeze Industrial Products |
| A-50G-18-F1/2-2 | 5/9 Secondary reference Norma Pennsylvania Inc. Div Breeze Industrial Products |
NSN 6680-00-445-7742 is a Tachometer,mechanical,fixed Moun, manufactured by Sterling Engine Co Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-445-7742 has 1 manufacturer part number on file: BM2167 (Sterling Engine Co Inc).
Key specifications for BM2167: Scale Quantity: 1; Major Graduation Color: BLACK; Overall Diameter: 3.625 INCHES NOMINAL IN; Dial Illumination: NOT PROVIDED. 24 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.