The Bell Crank, cataloged under National Stock Number 3040-00-325-7957, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-325-7957 |
| Primary Part Number | 8677020 |
| 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 | 5.250 INCHES NOMINAL FIRST END IN |
| Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball | 5.750 INCHES MINIMUM AND 5.875 INCHES MAXIMUM SECOND END IN |
| End Hole/ball Diameter | 0.500 INCHES NOMINAL SECOND END IN |
| End Hole/ball Diameter | 1.000 INCHES NOMINAL FIRST END IN |
| Bore Length | 1.630 INCHES NOMINAL IN |
| Style Designator | RAISED FACE PIVOT AND END HOLES |
| Bore Diameter | 1.375 INCHES NOMINAL IN |
| 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 |
|---|---|
| 8677020 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 647008 PRIMARY | Am General Llc (USA) |
| Reference | Meaning |
|---|---|
| 647008 | 5/9 Secondary reference Spalla Inc |
| 8677020 | 5/9 Secondary reference Highland Auto & Truck Supply |
| KZ317 | 5/9 Secondary reference Taylor-Dunn Corporation Dba Metro Crown International |
NSN 3040-00-325-7957 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 3040-00-325-7957 has 2 manufacturer part numbers on file: 8677020 (U S Army Tank Automotive Command Amsta-Im-Mm), 647008 (Am General Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5365-00-740-1755, 6840-01-278-5629. Verify interchangeability with system specifications before substitution.
Key specifications for 8677020: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 5.250 INCHES NOMINAL FIRST END IN; Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 5.750 INCHES MINIMUM AND 5.875 INCHES MAXIMUM SECOND END IN; End Hole/ball Diameter: 0.500 INCHES NOMINAL SECOND END IN; End Hole/ball Diameter: 1.000 INCHES NOMINAL FIRST END 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.
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.