The Bell Crank, cataloged under National Stock Number 3040-00-137-1672, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-137-1672 |
| 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 | 1.375 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.000 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.406 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.468 INCHES MINIMUM AND 0.469 INCHES MAXIMUM SECOND END IN |
| Bore Length | 2.438 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN |
| Style Designator | RAISED FACE PIVOT AND END HOLES |
| Material Document and Classification | QQ-A-601, ALLOY 356, CLASS 3M, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Features Provided | BEARING |
| Bore Diameter | 0.718 INCHES MINIMUM AND 0.719 INCHES MAXIMUM IN |
| 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 |
|---|---|
| V08-005-713 | 3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo |
NSN 3040-00-137-1672 is a Bell Crank, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
Key specifications for 3040-00-137-1672: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.375 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.000 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.406 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.468 INCHES MINIMUM AND 0.469 INCHES MAXIMUM SECOND END IN. 10 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.