The Bell Crank, cataloged under National Stock Number 3040-01-145-4531, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-145-4531 |
| 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 | 3.757 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 4.981 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.3145 INCHES MINIMUM AND 0.3155 INCHES MAXIMUM FIRST END IN |
| Bore Length | 2.083 INCHES MINIMUM AND 2.103 INCHES MAXIMUM IN |
| Style Designator | CLEVIS ENDS |
| Counterbore Depth | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Counterbore Diameter | 1.9995 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE |
| Bore Diameter | 1.9995 INCHES MINIMUM AND 2.0000 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Reference | Meaning |
|---|---|
| 70400-02207-102 | 3/2 Design control — primary reference U.S. Government activity |
| 70400-02207-102 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 3040-01-145-4531 is a Bell Crank, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-01-145-4531: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 3.757 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 4.981 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.3145 INCHES MINIMUM AND 0.3155 INCHES MAXIMUM FIRST END IN; Bore Length: 2.083 INCHES MINIMUM AND 2.103 INCHES MAXIMUM 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.
NSN 3040-01-145-4531 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.