The Shaft,shouldered, cataloged under National Stock Number 3040-01-379-2038, 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 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-379-2038 |
| Primary Part Number | 5548020 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Angle Between Holes | 90.0 DEGREES NOMINAL |
| Second End Hole Diameter | 0.2500 INCHES NOMINAL IN |
| Step Quantity | 2 |
| First End Diameter | 1.8320 INCHES NOMINAL IN |
| Second End Diameter | 1.2500 INCHES NOMINAL IN |
| Largest Step Diameter | 1.8320 INCHES NOMINAL IN |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Distance From Hole Center to End | 0.5000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.1870 INCHES NOMINAL IN |
| Second End Style | TWO CROSS DRILLED HOLES |
| Material | STEEL |
| Second End Distance Between Hole Centers | 4.5000 INCHES NOMINAL IN |
| First End Distance From Hole Center to End | 0.5000 INCHES NOMINAL 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 |
|---|---|
| 5548020 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-379-2038 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-379-2038 has 1 manufacturer part number on file: 5548020 (Naval Sea Systems Command).
Key specifications for 5548020: Second End Angle Between Holes: 90.0 DEGREES NOMINAL; Second End Hole Diameter: 0.2500 INCHES NOMINAL IN; Step Quantity: 2; First End Diameter: 1.8320 INCHES NOMINAL IN. 14 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.