The Shaft,shouldered, cataloged under National Stock Number 3040-01-406-8538, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-406-8538 |
| Primary Part Number | 6408197 FN 8SS |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Step Quantity | 1 |
| First End Diameter | 0.8750 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.1300 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY AND CROSS DRILLED HOLE |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.1830 INCHES MINIMUM IN |
| End Similarity | IDENTICAL |
| First End Hole Diameter | 0.3750 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR SUBSAFE ITEMS |
| External Keyway Length | 1.2500 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 0.1860 INCHES MINIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 6408197 FN 8SS | Naval Inventory Control Point Mechanicsburg (USA) |
| 564-6408197 FIND 8SS | Naval Inventory Control Point Mechanicsburg (USA) |
| 211066801SS | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 6408197 FN 8 | 5/1 Secondary reference Naval Sea Systems Command |
| 564-6408197 FIND 8 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 211066801 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 3040-01-406-8538 is a Shaft,shouldered, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-406-8538 has 3 manufacturer part numbers on file: 6408197 FN 8SS (Naval Inventory Control Point Mechanicsburg), 564-6408197 FIND 8SS (Naval Inventory Control Point Mechanicsburg), 211066801SS (Naval Inventory Control Point Mechanicsburg).
Key specifications for 6408197 FN 8SS: Step Quantity: 1; First End Diameter: 0.8750 INCHES MAXIMUM IN; Largest Step Diameter: 1.1300 INCHES NOMINAL IN; First End Style: FLAT KEYWAY AND CROSS DRILLED HOLE. 13 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 3040-01-406-8538 has DEMIL Code B. 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.