The Shaft,shouldered, cataloged under National Stock Number 3040-01-123-3013, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-123-3013 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 2.9930 INCHES MINIMUM AND 3.0000 INCHES MAXIMUM IN |
| First End Distance From Keyway Center to End | 2.372 INCHES NOMINAL IN |
| Second End Diameter | 3.1120 INCHES MINIMUM AND 3.1140 INCHES MAXIMUM IN |
| Largest Step Diameter | 3.620 INCHES NOMINAL IN |
| Second End Angle Between Keyways | 180.0 DEGREES NOMINAL |
| Second End Distance From Keyway Center to End | 4.117 INCHES NOMINAL IN |
| First End Style | TWO INDENTED FLAT KEYWAYS |
| Second End Keyway Width | 0.7500 INCHES MINIMUM AND 0.7520 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-N-286,CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.423 INCHES MINIMUM AND 0.428 INCHES MAXIMUM IN |
| Second End Keyway Depth | 0.423 INCHES MINIMUM AND 0.428 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | TWO INDENTED FLAT KEYWAYS |
| First End Angle Between Keyways | 180.0 DEGREES NOMINAL |
| Material | NICKEL ALLOY |
| External Keyway Length | 3.505 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 3.505 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.7500 INCHES MINIMUM AND 0.7520 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| 201-4684481 ITEM 12 | 5/2 Secondary reference U.S. Government activity |
| 87776-0106 ITEM 12 | 5/9 Secondary reference Drw Mfg Co |
| 201-4684481 | D/9 Drawing number reference only U.S. Government activity |
| 87776-0106 | D/9 Drawing number reference only U.S. Government activity |
| 87776-0106 ITEM 12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-123-3013 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3020-01-123-3956, 3040-01-123-5723, 3020-01-192-4632. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-123-3013: Surface Finish: 63.0 MICROINCHES; Step Quantity: 3; First End Diameter: 2.9930 INCHES MINIMUM AND 3.0000 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 2.372 INCHES NOMINAL IN. 20 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 3040-01-123-3013 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.