The Shaft,shouldered, cataloged under National Stock Number 3040-01-501-0189, 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 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-501-0189 |
| Primary Part Number | 566-7067173-51 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Second End External Thread Length | 1.235 INCHES NOMINAL IN |
| Step Quantity | 8 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 0.7500 INCHES NOMINAL IN |
| Largest Step Diameter | 3.250 INCHES NOMINAL IN |
| First End External Thread Length | 1.190 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Second End Keyway Width | 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM-A564,TYPE:630,CONDITION:H1025,HF ASSN STD SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.6050 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.209 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 1.190 INCHES NOMINAL IN |
| Second End Groove Width | 0.1900 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 1.235 INCHES NOMINAL IN |
| First End Groove Diameter | 0.6050 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED FLAT KEYWAY AND EXTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| First End Groove Width | 0.1900 INCHES NOMINAL IN |
| External Keyway Length | 2.312 INCHES NOMINAL SECOND END 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 |
|---|---|
| 566-7067173-51 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 566-7067173 | D/9 Drawing number reference only Naval Sea Systems Command |
| H625-0312-51 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-501-0189 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-501-0189 has 1 manufacturer part number on file: 566-7067173-51 (Naval Sea Systems Command).
8 possible matches (shared part number, not a government interchangeability claim): 3040-01-501-0358, 3040-01-501-0361, 3040-01-501-0364. Verify interchangeability with system specifications before substitution.
Key specifications for 566-7067173-51: Surface Finish: 32.0 MICROINCHES; Second End External Thread Length: 1.235 INCHES NOMINAL IN; Step Quantity: 8; First End Diameter: 0.7500 INCHES NOMINAL IN. 21 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.