The Bell Crank, cataloged under National Stock Number 3040-00-005-6438, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment 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9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-005-6438 |
| 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 | 3.500 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 3.500 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM SECOND END IN |
| Bore Length | 0.812 INCHES NOMINAL IN |
| Style Designator | FLAT, ONE OR MORE HOLES BOTH ARMS |
| Features Provided | FULCRUM BORE |
| Bore Diameter | 0.501 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| 2624374 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-00-005-6438 is a Bell Crank, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-005-6438: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 3.500 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 3.500 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM SECOND 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.
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.