The Shaft,shouldered, cataloged under National Stock Number 3040-01-377-7459, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-377-7459 |
| Primary Part Number | 752-5944481-2 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 7 |
| First End Diameter | 2.6250 INCHES MINIMUM AND 2.6280 INCHES MAXIMUM IN |
| Second End Diameter | 1.7480 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN |
| Largest Step Diameter | 3.070 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Second End Keyway Width | 0.3750 INCHES MINIMUM AND 0.3770 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-6758,COND F MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Keyway Depth | 0.208 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | STEEL COMP 4130 |
| External Keyway Length | 2.440 INCHES NOMINAL SECOND END IN |
| 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 |
|---|---|
| 752-5944481-2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 752-5944481-2 | 5/9 Secondary reference Westinghouse Electric Corp Machinery Technology Div |
| 5944481 PIECE 2 | D/9 Drawing number reference only Westinghouse Electric Corp Machinery Technology Div |
NSN 3040-01-377-7459 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-377-7459 has 1 manufacturer part number on file: 752-5944481-2 (Naval Sea Systems Command).
Key specifications for 752-5944481-2: Step Quantity: 7; First End Diameter: 2.6250 INCHES MINIMUM AND 2.6280 INCHES MAXIMUM IN; Second End Diameter: 1.7480 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN; Largest Step Diameter: 3.070 INCHES NOMINAL IN. 12 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.