The Ring,compressor Bol, cataloged under National Stock Number 2840-00-609-0790, 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. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Ring,compressor Bol |
| FSC / FSG | 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components (FSG 28) |
| Manufacturers | Rolls-Royce Corporation (CAGE 63005); Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (CAGE A0170) |
| Parameter | Value |
|---|---|
| NSN | 2840-00-609-0790 |
| Primary Part Number | 6786766 |
| Item Name | Ring,compressor Bol |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 6786766 PRIMARY | Rolls-Royce Corporation (USA) |
| 6786766 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| 6786766 | 5/1 Secondary reference Cuda II, Inc Div Aerospace Products Company |
| 6786766 | 5/9 Secondary reference General Motors Corp |
| 6786766 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6786766 | 3/9 Design control — primary reference Rolls-Royce Marine North America Inc. |
NSN 2840-00-609-0790 is a Ring,compressor Bol, manufactured by Rolls-Royce Corporation, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-609-0790 has 2 manufacturer part numbers on file: 6786766 (Rolls-Royce Corporation), 6786766 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
1 possible match (shared part number, not a government interchangeability claim): 2840-01-463-8934. Verify interchangeability with system specifications before substitution.
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.