The Shaft,shouldered, cataloged under National Stock Number 3040-01-111-3997, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-111-3997 |
| Primary Part Number | 2584172 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End Angle Between Holes | 90.0000 DEGREES NOMINAL |
| Second End Hole Diameter | 0.1400 INCHES NOMINAL IN |
| Second End External Thread Length | 1.094 INCHES NOMINAL IN |
| Step Quantity | 7 |
| First End Diameter | 2.7500 INCHES NOMINAL IN |
| Second End Diameter | 1.2500 INCHES NOMINAL IN |
| Largest Step Diameter | 7.875 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | MIL-S-4672 MIL SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.188 INCHES NOMINAL IN |
| Second End Hole Depth | 1.2500 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | TWO CROSS DRILLED HOLES AND EXTERNALLY THREADED |
| Material | STEEL COMP 4140 OR STEEL COMP 4340 |
| 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 |
|---|---|
| 2584172 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2584172 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3040-01-111-3997 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-111-3997 has 1 manufacturer part number on file: 2584172 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5935-01-298-8143. Verify interchangeability with system specifications before substitution.
Key specifications for 2584172: Second End Angle Between Holes: 90.0000 DEGREES NOMINAL; Second End Hole Diameter: 0.1400 INCHES NOMINAL IN; Second End External Thread Length: 1.094 INCHES NOMINAL IN; Step Quantity: 7. 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.