The Bell Crank, cataloged under National Stock Number 1680-01-315-4339, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-315-4339 |
| Primary Part Number | 74A640038-2001 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.978 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.038 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.281 INCHES MINIMUM AND 0.287 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.281 INCHES MINIMUM AND 0.287 INCHES MAXIMUM SECOND END IN |
| Bore Length | 0.438 INCHES NOMINAL IN |
| Style Designator | FLAT, ONE OR MORE HOLES BOTH ARMS |
| Bore Diameter | 0.281 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 74A640038-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10105058 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 1680-01-315-4339 is a Bell Crank, manufactured by The Boeing Company Div Defense, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-315-4339 has 1 manufacturer part number on file: 74A640038-2001 (The Boeing Company Div Defense).
Key specifications for 74A640038-2001: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.978 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.038 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.281 INCHES MINIMUM AND 0.287 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.281 INCHES MINIMUM AND 0.287 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 1680-01-315-4339 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.