The Shaft,shouldered, cataloged under National Stock Number 3040-01-171-4996, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-171-4996 |
| Primary Part Number | 656C0445J030A |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Second End External Thread Length | 0.437 INCHES NOMINAL IN |
| Step Quantity | 10 |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Diameter | 0.7500 INCHES NOMINAL IN |
| Largest Step Diameter | 1.500 INCHES NOMINAL IN |
| First End External Thread Length | 1.031 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | STEEL |
| 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 |
|---|---|
| 656C0445J030A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| Reference | Meaning |
|---|---|
| PL999D0588 PC 26 | 5/9 Secondary reference Circor Naval Solutions Llc Dba Warren Pumps |
| 656C0445 | D/9 Drawing number reference only Circor Naval Solutions Llc Dba Warren Pumps |
NSN 3040-01-171-4996 is a Shaft,shouldered, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-171-4996 has 1 manufacturer part number on file: 656C0445J030A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 656C0445J030A: Surface Finish: 32.0 MICROINCHES; Second End External Thread Length: 0.437 INCHES NOMINAL IN; Step Quantity: 10; First End Diameter: 0.6250 INCHES NOMINAL IN. 11 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.