The Shaft,shouldered, cataloged under National Stock Number 3040-01-342-0622, 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 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-342-0622 |
| Primary Part Number | 6197588 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Step Length | 0.6200 INCHES NOMINAL IN |
| Largest Step Diameter | 0.7470 INCHES NOMINAL IN |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Angle Between Flats | 180.0 DEGREES NOMINAL |
| Material Document and Classification | QQ-S-763,COND A FED SPEC SINGLE MATERIAL RESPONSE OR ASTM A276,COND A ASSN STD SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.2520 INCHES NOMINAL IN |
| Second End Style | TWO FLATS |
| Material | STEEL COMP 316 |
| First End Distance From Hole Center to End | 0.5000 INCHES NOMINAL 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 |
|---|---|
| 6197557 PART 24 | Naval Sea Systems Command (USA) |
| 6197588 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6197557 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-342-0622 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-342-0622 has 2 manufacturer part numbers on file: 6197557 PART 24 (Naval Sea Systems Command), 6197588 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-392-0404. Verify interchangeability with system specifications before substitution.
Key specifications for 6197588: Step Quantity: 3; First End Diameter: 0.6250 INCHES NOMINAL IN; Second End Diameter: 0.6250 INCHES NOMINAL IN; Second End Step Length: 0.6200 INCHES NOMINAL IN. 13 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.