The Bell Crank, cataloged under National Stock Number 1680-00-971-3366, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 1680-00-971-3366 |
| Primary Part Number | 128CM10115-1 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Bore Length | 4.312 INCHES MINIMUM AND 4.322 INCHES MAXIMUM IN |
| Bore Diameter | 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 128CM10115-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 128CM10115-1 | Design/ol, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 128CM10115-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 128CM10115-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1680-00-971-3366 is a Bell Crank, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-971-3366 has 2 manufacturer part numbers on file: 128CM10115-1 (Northrop Grumman Systems Corporation), 128CM10115-1 (Design/ol, Inc.).
Key specifications for 128CM10115-1: Bore Length: 4.312 INCHES MINIMUM AND 4.322 INCHES MAXIMUM IN; Bore Diameter: 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM IN; Material: ALUMINUM ALLOY. 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.
NSN 1680-00-971-3366 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.