The Bell Crank, cataloged under National Stock Number 3040-00-221-9056, 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 8 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 | 3040-00-221-9056 |
| Primary Part Number | 10870230 |
| 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 | 2.844 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 4.359 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 0.505 INCHES MINIMUM AND 0.507 INCHES MAXIMUM ALL ENDS IN |
| Bore Length | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-S-681, CLASS 2 FED SPEC SINGLE MATERIAL RESPONSE |
| Surface Treatment | PAINT |
| Bore Diameter | 0.690 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 10870230 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-00-221-9056 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 3040-00-221-9056 has 1 manufacturer part number on file: 10870230 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 10870230: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.844 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 4.359 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 0.505 INCHES MINIMUM AND 0.507 INCHES MAXIMUM ALL ENDS IN; Bore Length: 0.500 INCHES NOMINAL IN. 8 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 3040-00-221-9056 has DEMIL Code B. 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.