The Shaft,shouldered, cataloged under National Stock Number 3040-01-501-0158, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-501-0158 |
| Primary Part Number | 123-4556119 PART 5 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Second End External Thread Length | 1.750 INCHES NOMINAL IN |
| Step Quantity | 5 |
| First End Diameter | 3.3750 INCHES NOMINAL IN |
| Second End Diameter | 1.7500 INCHES NOMINAL IN |
| Largest Step Diameter | 3.375 INCHES NOMINAL IN |
| First End Slot Width | 1.000 INCHES NOMINAL IN |
| First End Style | SLOTTED |
| Material Document and Classification | QQ-N-286, CL-A, HF ANL AH FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Slot Depth | 0.750 INCHES NOMINAL IN |
| Second End Style | EXTERNAL THREADED |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 123-4556119 PART 5 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 123-5901612 PART 74 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 4556119 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
| 5901612 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-501-0158 is a Shaft,shouldered, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-501-0158 has 2 manufacturer part numbers on file: 123-4556119 PART 5 (Huntington Ingalls Inc Div Newport News Shipbuilding), 123-5901612 PART 74 (Huntington Ingalls Inc Div Newport News Shipbuilding).
1 possible match (shared part number, not a government interchangeability claim): 3010-01-501-2328. Verify interchangeability with system specifications before substitution.
Key specifications for 123-4556119 PART 5: Surface Finish: 63.0 MICROINCHES; Second End External Thread Length: 1.750 INCHES NOMINAL IN; Step Quantity: 5; First End Diameter: 3.3750 INCHES NOMINAL IN. 13 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.