The Shaft,straight, cataloged under National Stock Number 3040-01-378-3799, 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 | 3040-01-378-3799 |
| Primary Part Number | 5548071 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 0.6230 INCHES MAXIMUM IN |
| Second End Diameter | 0.6230 INCHES NOMINAL IN |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Keyway Width | 0.1900 INCHES NOMINAL IN |
| Second End Groove Diameter | 0.5880 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.1060 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.1870 INCHES NOMINAL IN |
| Second End Groove Width | 0.1900 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 2.1200 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND FLAT KEYWAY |
| Material | STEEL COMP 304 |
| First End Distance From Hole Center to End | 1.0000 INCHES NOMINAL IN |
| External Keyway Length | 0.8800 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 |
|---|---|
| 5548071 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-378-3799 is a Shaft,straight, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-378-3799 has 1 manufacturer part number on file: 5548071 (Naval Sea Systems Command).
Key specifications for 5548071: First End Diameter: 0.6230 INCHES MAXIMUM IN; Second End Diameter: 0.6230 INCHES NOMINAL IN; First End Style: UNTHREADED CROSS DRILLED; Second End Keyway Width: 0.1900 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.