The Shaft,shouldered, cataloged under National Stock Number 3040-01-501-3379, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-501-3379 |
| Primary Part Number | 585-6726941-27 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Second End External Thread Length | 0.6600 INCHES NOMINAL IN |
| Step Quantity | 6 |
| First End Diameter | 0.3800 INCHES NOMINAL IN |
| Second End Diameter | 0.3750 INCHES NOMINAL IN |
| Largest Step Diameter | 0.556 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Material Document and Classification | QQ-N-281 CL-A, FORM 1 FED SPEC ALL MATERIAL RESPONSES |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.0400 INCHES NOMINAL IN |
| First End Groove Diameter | 0.3470 INCHES MINIMUM AND 0.3570 INCHES MAXIMUM IN |
| Second End Style | EXTERNAL THREADED |
| Material | NICKEL ALLOY 400 |
| First End Groove Width | 0.0300 INCHES MINIMUM AND 0.0350 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 |
|---|---|
| M4FL-0051-IAA-109 | Copeland Lp Dba Copeland Co (USA) |
| 585-6726941-27 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6726941 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-501-3379 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-501-3379 has 2 manufacturer part numbers on file: M4FL-0051-IAA-109 (Copeland Lp Dba Copeland Co), 585-6726941-27 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-501-3418, 3040-01-501-3424, 5340-01-502-1361. Verify interchangeability with system specifications before substitution.
Key specifications for 585-6726941-27: Second End External Thread Length: 0.6600 INCHES NOMINAL IN; Step Quantity: 6; First End Diameter: 0.3800 INCHES NOMINAL IN; Second End Diameter: 0.3750 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.