The Bell Crank, cataloged under National Stock Number 1680-00-123-0507, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-123-0507 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.875 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.125 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM SECOND END IN |
| Bore Length | 0.128 INCHES NOMINAL IN |
| Style Designator | FLAT-BOLT CIRCLE AROUND PIVOT HOLE |
| Bore Diameter | 1.000 INCHES NOMINAL 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 |
| Reference | Meaning |
|---|---|
| 1117731 | 3/2 Design control — primary reference U.S. Government activity |
| 1117731 | 5/9 Secondary reference The Boeing Company |
NSN 1680-00-123-0507 is a Bell Crank, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-00-123-0507: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.875 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.125 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.189 INCHES MINIMUM AND 0.190 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.189 INCHES MINIMUM AND 0.190 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 1680-00-123-0507 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.