The Bell Crank, cataloged under National Stock Number 3040-01-105-8791, 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 9 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 | 3040-01-105-8791 |
| Primary Part Number | 12297138 |
| 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 | 2.250 INCHES NOMINAL SECOND END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 2.250 INCHES NOMINAL FIRST END IN |
| End Hole/ball Diameter | 0.312 INCHES MINIMUM AND 0.338 INCHES MAXIMUM FIRST END IN |
| End Hole/ball Diameter | 0.312 INCHES MINIMUM AND 0.338 INCHES MAXIMUM SECOND END IN |
| Bore Length | 1.228 INCHES MINIMUM AND 1.258 INCHES MAXIMUM IN |
| Style Designator | RAISED FACE PIVOT AND END HOLES |
| Surface Treatment | CADMIUM |
| Bore Diameter | 0.624 INCHES MINIMUM AND 0.626 INCHES MAXIMUM IN |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12297138 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 3040-01-105-8791 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 3040-01-105-8791 has 1 manufacturer part number on file: 12297138 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12297138: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.250 INCHES NOMINAL SECOND END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.250 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.312 INCHES MINIMUM AND 0.338 INCHES MAXIMUM FIRST END IN; End Hole/ball Diameter: 0.312 INCHES MINIMUM AND 0.338 INCHES MAXIMUM SECOND END IN. 9 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 3040-01-105-8791 has DEMIL Code Q. 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.