The Bell Crank, cataloged under National Stock Number 1680-00-043-0052, 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. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-00-043-0052 |
| Primary Part Number | 369N2638 |
| Item Name | Bell Crank |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Bore Length | 2.377 INCHES MINIMUM AND 2.397 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-M-55, COMP AZ91C, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | BEARING AND COUNTERBORE |
| Surface Treatment | ANODIZE |
| Bore Diameter | 0.620 INCHES NOMINAL IN |
| Material | MAGNESIUM 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 |
|---|---|
| 369N2638 PRIMARY | The Boeing Company (USA) |
| 36N2638 | Md Helicopters Inc (USA) |
| 369A7302 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 10443707 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 369N2638 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 369A7302 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 1680-00-043-0052 is a Bell Crank, manufactured by The Boeing Company, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-00-043-0052 has 3 manufacturer part numbers on file: 369N2638 (The Boeing Company), 36N2638 (Md Helicopters Inc), 369A7302 (The Boeing Company).
Key specifications for 369N2638: Bore Length: 2.377 INCHES MINIMUM AND 2.397 INCHES MAXIMUM IN; Material Document and Classification: QQ-M-55, COMP AZ91C, T6 FED SPEC SINGLE MATERIAL RESPONSE; Features Provided: BEARING AND COUNTERBORE; Special Features: FULCRUM BORE PROVIDED. 6 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 1680-00-043-0052 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.