The Plate,retaining,rear Oil Seal, cataloged under National Stock Number 2840-01-064-1708, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Rolls-Royce Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 2840-01-064-1708 |
| Primary Part Number | 6889966 |
| Item Name | Plate,retaining,rear Oil Seal |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Overall Diameter | 7.034 INCHES MINIMUM AND 7.035 INCHES MAXIMUM IN |
| Criticality Code Justification | MATT AND ADAV AND ABHP AND AGAV |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 6889966 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6889966 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 2840-01-064-1708 is a Plate,retaining,rear Oil Seal, manufactured by Rolls-Royce Corporation, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-01-064-1708 has 1 manufacturer part number on file: 6889966 (Rolls-Royce Corporation).
Key specifications for 6889966: Overall Diameter: 7.034 INCHES MINIMUM AND 7.035 INCHES MAXIMUM IN; Criticality Code Justification: MATT AND ADAV AND ABHP AND AGAV; Overall Length: 0.543 INCHES MINIMUM AND 0.548 INCHES MAXIMUM IN; End Item Identification: TF41 ENG. 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.