The Bell Crank, cataloged under National Stock Number 1680-01-521-0692, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-521-0692 |
| 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 | 2.250 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.620 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.5625 INCHES MINIMUM AND 0.5634 INCHES MAXIMUM SECOND END IN |
| End Hole/ball Diameter | 0.6250 INCHES MINIMUM AND 0.6275 INCHES MAXIMUM FIRST END IN |
| Bore Length | 0.770 INCHES MINIMUM AND 0.820 INCHES MAXIMUM IN |
| Style Designator | TONGUE END, VERTICAL HOLES OTHER ARM |
| Fulcrum Bore Shape | PLAIN |
| Bore Diameter | 0.8125 INCHES MINIMUM AND 0.8134 INCHES MAXIMUM IN |
| Material | IRON CAST |
| 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 |
| Reference | Meaning |
|---|---|
| 354011-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1680-01-521-0692 is a Bell Crank, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
Key specifications for 1680-01-521-0692: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.250 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.620 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.5625 INCHES MINIMUM AND 0.5634 INCHES MAXIMUM SECOND END IN; End Hole/ball Diameter: 0.6250 INCHES MINIMUM AND 0.6275 INCHES MAXIMUM FIRST END IN. 9 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 1680-01-521-0692 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.