The Shaft,shouldered, cataloged under National Stock Number 3040-01-491-0088, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-491-0088 |
| Primary Part Number | 803-6397269 PC 123 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 2 |
| First End Diameter | 1.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 0.875 INCHES MINIMUM AND 0.876 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Material Document and Classification | ASTM-A-276, TYPE 13 COND A NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Slot Width | 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Second End Groove Width | 0.1875 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.125 INCHES NOMINAL IN |
| Material | STEEL |
| Second End Width Across Flats | 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM 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 |
|---|---|
| 803-6397269 PC 123 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3040-01-491-0088 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-491-0088 has 1 manufacturer part number on file: 803-6397269 PC 123 (Naval Sea Systems Command).
Key specifications for 803-6397269 PC 123: Step Quantity: 2; First End Diameter: 1.0000 INCHES NOMINAL IN; Largest Step Diameter: 0.875 INCHES MINIMUM AND 0.876 INCHES MAXIMUM IN; First End Style: PLAIN. 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.