The Shaft,shouldered, cataloged under National Stock Number 3040-01-595-5496, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-595-5496 |
| Primary Part Number | 721-8217297-27 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Diameter | 2.0000 INCHES NOMINAL IN |
| Second End Diameter | 1.9130 INCHES MINIMUM AND 1.9280 INCHES MAXIMUM IN |
| Largest Step Diameter | 4.000 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 2.2450 INCHES NOMINAL IN |
| First End External Thread Length | 2.751 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Second End Spline Major Diameter | 2.2470 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 10 |
| Second End Style | SPLINED (STRAIGHT) |
| Material | NICKEL ALLOY K-500 |
| Second End Spline Length | 3.750 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 |
|---|---|
| 721-8217297-27 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H861-8110-27 | 5/2 Secondary reference U.S. Government activity |
| 741-8217287-35 | 5/1 Secondary reference Naval Sea Systems Command |
| H861-6000-35 | 5/1 Secondary reference U.S. Government activity |
NSN 3040-01-595-5496 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-595-5496 has 1 manufacturer part number on file: 721-8217297-27 (Naval Sea Systems Command).
Key specifications for 721-8217297-27: First End Diameter: 2.0000 INCHES NOMINAL IN; Second End Diameter: 1.9130 INCHES MINIMUM AND 1.9280 INCHES MAXIMUM IN; Largest Step Diameter: 4.000 INCHES NOMINAL IN; Second End Spline Minor Diameter: 2.2450 INCHES NOMINAL IN. 12 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.