The Shaft,shouldered, cataloged under National Stock Number 3040-01-449-0691, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-449-0691 |
| Primary Part Number | 2D1-03963 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Step Quantity | 8 |
| First End Diameter | 0.6250 INCHES NOMINAL IN |
| Second End Diameter | 4.1340 INCHES NOMINAL IN |
| Largest Step Diameter | 4.875 INCHES NOMINAL IN |
| First End Style | PLAIN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INTERNAL THREADED |
| Material | STEEL COMP 1045 |
| Second End Internal Thread Length | 0.500 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 |
|---|---|
| 2E3-00294 IT NO 10 | Lake Shore Systems, Inc. (USA) |
| 2D1-03963 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2E3-00294 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3040-01-449-0691 is a Shaft,shouldered, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-449-0691 has 2 manufacturer part numbers on file: 2E3-00294 IT NO 10 (Lake Shore Systems, Inc.), 2D1-03963 (Lake Shore Systems, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-449-1735. Verify interchangeability with system specifications before substitution.
Key specifications for 2D1-03963: Step Quantity: 8; First End Diameter: 0.6250 INCHES NOMINAL IN; Second End Diameter: 4.1340 INCHES NOMINAL IN; Largest Step Diameter: 4.875 INCHES NOMINAL IN. 9 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.