The Bell Crank, cataloged under National Stock Number 3040-00-787-0670, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-787-0670 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.132 INCHES MINIMUM AND 1.135 INCHES MAXIMUM SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.735 INCHES MINIMUM AND 2.745 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST END IN |
| FSC Application Data | HYDRAULIC SYSTEM,ACFT |
| Style Designator | CLEVIS ENDS |
| Material | ALUMINUM ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 37412 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-787-0670 is a Bell Crank, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4810-01-280-4222. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-00-787-0670: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.132 INCHES MINIMUM AND 1.135 INCHES MAXIMUM SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.735 INCHES MINIMUM AND 2.745 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.249 INCHES MINIMUM AND 0.250 INCHES MAXIMUM FIRST END IN; FSC Application Data: HYDRAULIC SYSTEM,ACFT. 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.
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.