The Shaft,shouldered, cataloged under National Stock Number 3040-01-278-9888, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Superior Motion Controls, Inc. Dba Superior Motion Controls. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-278-9888 |
| Primary Part Number | 5497638-5 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Superior Motion Controls, Inc. Dba Superior Motion Controls |
| Status | ACTIVE |
| Material Document and Classification | AMS-5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5497638-5 | Naval Sea Systems Command (USA) |
| 5497638-5 PRIMARY | Superior Motion Controls, Inc. Dba Superior Motion Controls (USA) |
| Reference | Meaning |
|---|---|
| 5497638 | D/9 Drawing number reference only Naval Sea Systems Command |
| 5497638-3 | 5/9 Secondary reference Lockheed Martin Corporation Div Rotary and Mission Systems |
| 5497638-3 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 3040-01-278-9888 is a Shaft,shouldered, manufactured by Superior Motion Controls, Inc. Dba Superior Motion Controls, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-278-9888 has 2 manufacturer part numbers on file: 5497638-5 (Naval Sea Systems Command), 5497638-5 (Superior Motion Controls, Inc. Dba Superior Motion Controls).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-279-4585. Verify interchangeability with system specifications before substitution.
Key specifications for 5497638-5: Material Document and Classification: AMS-5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE; Material: STEEL CORROSION RESISTING. 2 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 3040-01-278-9888 has DEMIL Code Q. 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.