The Bell Crank, cataloged under National Stock Number 3040-00-741-1280, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-741-1280 |
| Primary Part Number | 7411280 |
| Item Name | Bell Crank |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.500 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 1.750 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.3735 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM SECOND END IN |
| End Hole/ball Diameter | 0.4675 INCHES MINIMUM AND 0.4695 INCHES MAXIMUM FIRST END IN |
| FSC Application Data | SHIFTING CONTROLS,AUTOMATIC TRANSMISSION |
| Bore Length | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Style Designator | RAISED FACED HOLES, CLAMP PIVOT HOLE, OFFSET BOTH ARMS |
| Hole Thread Size | 5/16-24 |
| Counterbore Depth | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.564 INCHES MINIMUM AND 0.571 INCHES MAXIMUM IN |
| Bore Diameter | 0.564 INCHES MINIMUM AND 0.571 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 |
| Part Number | Manufacturer |
|---|---|
| 7411280 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 2279343 | General Motors Corp (USA) |
| Reference | Meaning |
|---|---|
| 2279343 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| 2279343 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
NSN 3040-00-741-1280 is a Bell Crank, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-741-1280 has 2 manufacturer part numbers on file: 7411280 (U S Army Tank Automotive Command Amsta-Im-Mm), 2279343 (General Motors Corp).
Key specifications for 7411280: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.500 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 1.750 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.3735 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM SECOND END IN; End Hole/ball Diameter: 0.4675 INCHES MINIMUM AND 0.4695 INCHES MAXIMUM FIRST END IN. 12 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.