The Shaft,shouldered, cataloged under National Stock Number 3040-01-072-3111, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-072-3111 |
| Primary Part Number | 12266378 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| First End Tongue Thickness | 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Step Quantity | 2 |
| First End Diameter | 0.3630 INCHES NOMINAL IN |
| First End Tongue Width | 0.455 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| First End Step Length | 0.620 INCHES NOMINAL IN |
| Largest Step Diameter | 0.375 INCHES NOMINAL IN |
| First End Style | RECTANGULAR |
| End Similarity | IDENTICAL |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 12266378 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 676983-3 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| 12266378 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
NSN 3040-01-072-3111 is a Shaft,shouldered, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-072-3111 has 1 manufacturer part number on file: 12266378 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 6695-01-083-3764. Verify interchangeability with system specifications before substitution.
Key specifications for 12266378: First End Tongue Thickness: 0.188 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Step Quantity: 2; First End Diameter: 0.3630 INCHES NOMINAL IN; First End Tongue Width: 0.455 INCHES MINIMUM AND 0.470 INCHES MAXIMUM 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 3040-01-072-3111 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.