The Shaft,shouldered, cataloged under National Stock Number 3040-01-100-4945, 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 15 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-100-4945 |
| Primary Part Number | 5347219 ITEM 3 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 4 |
| First End Diameter | 1.2500 INCHES NOMINAL IN |
| Second End Diameter | 2.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.000 INCHES NOMINAL IN |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Keyway Width | 5.0000 INCHES NOMINAL IN |
| Second End Keyway Depth | 2.500 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.2030 INCHES NOMINAL IN |
| Second End Style | FLAT KEYWAYS AND INTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| Second End Internal Thread Length | 1.063 INCHES NOMINAL IN |
| First End Distance From Hole Center to End | 0.375 INCHES NOMINAL IN |
| External Keyway Length | 5.000 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 |
|---|---|
| 5347219 ITEM 3 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5347219 | D/9 Drawing number reference only Naval Sea Systems Command |
| 1251-243 | D/9 Drawing number reference only U.S. Government activity |
| 1251-243 ITEM 3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-100-4945 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-100-4945 has 1 manufacturer part number on file: 5347219 ITEM 3 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 2010-01-101-6319. Verify interchangeability with system specifications before substitution.
Key specifications for 5347219 ITEM 3: Surface Finish: 32.0 MICROINCHES; Step Quantity: 4; First End Diameter: 1.2500 INCHES NOMINAL IN; Second End Diameter: 2.0000 INCHES NOMINAL IN. 15 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.