The Bell Crank, cataloged under National Stock Number 3040-01-505-8145, 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 Div Defense. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-505-8145 |
| Primary Part Number | 74A672410-1001 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.000 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.000 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.190 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.250 INCHES NOMINAL FIRST END IN |
| Style Designator | RAISED FACE PIVOT HOLE W/HEEL, CLEVIS ONE END |
| Features Provided | BEARING AND FULCRUM BORE |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74A672410-1001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A672410-1001 | Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co (USA) |
| Reference | Meaning |
|---|---|
| 74A672410 REV B | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 3040-01-505-8145 is a Bell Crank, manufactured by The Boeing Company Div Defense, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-505-8145 has 2 manufacturer part numbers on file: 74A672410-1001 (The Boeing Company Div Defense), 74A672410-1001 (Mccay Tool and Engineering Company Dba Mccay Tool & Engineering Co).
Key specifications for 74A672410-1001: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.000 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.000 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.190 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.250 INCHES NOMINAL FIRST END IN. 7 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.