The Shaft,shouldered, cataloged under National Stock Number 3040-01-317-2783, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-317-2783 |
| Primary Part Number | 122-5486623 PC93 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 6 |
| First End Diameter | 0.7500 INCHES NOMINAL IN |
| Second End Diameter | 0.9990 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN |
| Largest Step Diameter | 2.0000 INCHES NOMINAL IN |
| First End External Thread Length | 1.8800 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 1.1900 INCHES NOMINAL IN |
| First End Style | EXTERNALLY AND INTERNALLY THREADED |
| Second End Keyway Width | 0.2520 INCHES NOMINAL IN |
| First End Internal Thread Length | 9.2500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | WOODRUFF KEYWAY AND INTERNALLY THREADED |
| Material | NICKEL ALLOY |
| Second End Internal Thread Length | 0.8800 INCHES NOMINAL IN |
| External Keyway Length | 0.7780 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 |
|---|---|
| 122-5486623 PC93 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 122-5486623 | D/9 Drawing number reference only Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 3040-01-317-2783 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-317-2783 has 1 manufacturer part number on file: 122-5486623 PC93 (Naval Sea Systems Command).
7 possible matches (shared part number, not a government interchangeability claim): 3040-01-317-2784, 3040-01-317-2785, 2040-01-502-8808. Verify interchangeability with system specifications before substitution.
Key specifications for 122-5486623 PC93: Surface Finish: 32.0 MICROINCHES; Step Quantity: 6; First End Diameter: 0.7500 INCHES NOMINAL IN; Second End Diameter: 0.9990 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN. 16 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.