The Generator,tachometer, cataloged under National Stock Number 6680-00-882-8974, 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 Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-00-882-8974 |
| Primary Part Number | 6862450 |
| Item Name | Generator,tachometer |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 4 UNTHREADED HOLE(S) |
| FSC Application Data | LOW PRESSURE ROTOR TACHOMETER; USED FOR TF41A1 ENGINE TURBO-FAN |
| Mounting Method | FLANGE |
| Excitor Type | SELF-EXCITED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6862450 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6862450 | Rolls-Royce Airlines (GBR) |
| 3001KGAJA1 | Meggitt (uk) Ltd Div Meggitt Sensing Systems (GBR) |
| Reference | Meaning |
|---|---|
| 3001KGAJA1 | 3/9 Design control — primary reference Ge Aviation Systems Llc Dba Ge Aviation |
| 3001KGAJA1 | 5/9 Secondary reference Ge Aviation Systems Llc |
NSN 6680-00-882-8974 is a Generator,tachometer, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-00-882-8974 has 3 manufacturer part numbers on file: 6862450 (Allison Transmission Inc Dba Allison Transmission, Inc), 6862450 (Rolls-Royce Airlines), 3001KGAJA1 (Meggitt (uk) Ltd Div Meggitt Sensing Systems).
Key specifications for 6862450: Mounting Facility Type and Quantity: 4 UNTHREADED HOLE(S); FSC Application Data: LOW PRESSURE ROTOR TACHOMETER; USED FOR TF41A1 ENGINE TURBO-FAN; Overall Length: 3.377 INCHES IN; Mounting Method: FLANGE. 4 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.
NSN 6680-00-882-8974 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.