The Bell Crank, cataloged under National Stock Number 3040-00-657-4868, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-657-4868 |
| Primary Part Number | 10870283 |
| 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 | 6.000 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 3.000 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.505 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.689 INCHES NOMINAL SECOND END IN |
| Bore Length | 2.850 INCHES NOMINAL IN |
| Style Designator | RAISED FACED HOLES, OFFSET ARM |
| Counterbore Depth | 0.810 INCHES NOMINAL IN |
| Counterbore Diameter | 1.000 INCHES NOMINAL IN |
| Bore Diameter | 0.810 INCHES NOMINAL 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 |
|---|---|
| 10870283 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-00-657-4868 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 3040-00-657-4868 has 1 manufacturer part number on file: 10870283 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10870283: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 6.000 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 3.000 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.505 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.689 INCHES NOMINAL 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.