The Shaft,shouldered, cataloged under National Stock Number 3040-01-518-6552, 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 10 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 | 3040-01-518-6552 |
| Primary Part Number | 6390679-1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Hole Diameter | 1.1830 INCHES NOMINAL IN |
| First End Diameter | 2.5040 INCHES NOMINAL IN |
| Second End Taper | 0.5500 PER FOOT IN INCHES |
| Second End Step Length | 0.2500 INCHES NOMINAL IN |
| First End Slot Width | 1.1550 INCHES NOMINAL IN |
| First End Style | SLOTTED AND INTERNALLY THREADED |
| First End Internal Thread Length | 1.1300 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Slot Depth | 1.1300 INCHES NOMINAL IN |
| Second End Style | FLANGED AND INTERNAL KEYWAY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6390679-1 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-518-6552 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-518-6552 has 1 manufacturer part number on file: 6390679-1 (Naval Sea Systems Command).
Key specifications for 6390679-1: Second End Hole Diameter: 1.1830 INCHES NOMINAL IN; First End Diameter: 2.5040 INCHES NOMINAL IN; Second End Taper: 0.5500 PER FOOT IN INCHES; Second End Step Length: 0.2500 INCHES NOMINAL IN. 10 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.
NSN 3040-01-518-6552 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.