The Bell Crank, cataloged under National Stock Number 1680-00-005-0125, 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 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-005-0125 |
| Primary Part Number | A51M42508-11 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.427 INCHES NOMINAL AND 1.432 INCHES MAXIMUM FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.496 INCHES MINIMUM AND 1.501 INCHES MAXIMUM SECOND END IN |
| End Hole/ball Diameter | 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM SECOND END IN |
| Bore Length | 1.457 INCHES MINIMUM AND 1.463 INCHES MAXIMUM IN |
| Style Designator | RAISED FACE PIVOT HOLE, CLEVIS BOTH ENDS |
| Bore Diameter | 0.500 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN |
| Material | TITANIUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A51M42508-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| A51M42508-11 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| A51M42508-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 1680-00-005-0125 is a Bell Crank, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-005-0125 has 1 manufacturer part number on file: A51M42508-11 (Northrop Grumman Systems Corporation).
Key specifications for A51M42508-11: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.427 INCHES NOMINAL AND 1.432 INCHES MAXIMUM FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.496 INCHES MINIMUM AND 1.501 INCHES MAXIMUM SECOND END IN; End Hole/ball Diameter: 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.249 INCHES MINIMUM AND 0.251 INCHES MAXIMUM SECOND END IN. 8 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 1680-00-005-0125 has DEMIL Code Q. 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.