The Shaft,shouldered, cataloged under National Stock Number 3040-01-005-3866, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings). 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-005-3866 |
| Primary Part Number | CS-3040-SV-0728 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) |
| Status | ACTIVE |
| Step Quantity | 3 |
| First End Diameter | 0.8740 INCHES NOMINAL IN |
| Second End Diameter | 0.9690 INCHES NOMINAL IN |
| Largest Step Diameter | 0.985 INCHES NOMINAL IN |
| First End Style | FLAT KEYWAY |
| Second End Keyway Width | 0.1875 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CLASS A,FROM 1 FED SPEC SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.104 INCHES NOMINAL IN |
| First End Distance Between Keyway Centers | 0.688 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.140 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | FLAT KEYWAY |
| Material | NICKEL ALLOY |
| External Keyway Length | 1.750 INCHES NOMINAL FIRST END IN |
| External Keyway Length | 0.630 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.1875 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 |
|---|---|
| CS-3040-SV-0728 PRIMARY | Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA) |
| Reference | Meaning |
|---|---|
| N430719 | 5/9 Secondary reference Federal Equipment Company Dba Use CAGE Code 60587 for Cataloging |
| AM56051-1 | 5/9 Secondary reference Airpak Products Corporation Dba Airpak Products Corp |
| AM56051 | 5/9 Secondary reference Airpak Products Corporation Dba Airpak Products Corp |
NSN 3040-01-005-3866 is a Shaft,shouldered, manufactured by Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings), classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-005-3866 has 1 manufacturer part number on file: CS-3040-SV-0728 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-005-3867. Verify interchangeability with system specifications before substitution.
Key specifications for CS-3040-SV-0728: Step Quantity: 3; First End Diameter: 0.8740 INCHES NOMINAL IN; Second End Diameter: 0.9690 INCHES NOMINAL IN; Largest Step Diameter: 0.985 INCHES NOMINAL 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.