The Bell Crank, cataloged under National Stock Number 3040-01-155-6610, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-155-6610 |
| Primary Part Number | 7-311516061 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 3.500 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 0.3432 INCHES NOMINAL FIRST END IN |
| Bore Length | 0.214 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM 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 |
| Part Number | Manufacturer |
|---|---|
| 7-311516061 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-311516061 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 3040-01-155-6610 is a Bell Crank, manufactured by The Boeing Company, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-155-6610 has 1 manufacturer part number on file: 7-311516061 (The Boeing Company).
Key specifications for 7-311516061: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 3.500 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 0.3432 INCHES NOMINAL FIRST END IN; Bore Length: 0.214 INCHES MINIMUM AND 0.219 INCHES MAXIMUM IN; End Item Identification: AH-64-AIRFRAME. 5 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 3040-01-155-6610 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.