The Shaft,shouldered, cataloged under National Stock Number 3040-01-406-6161, 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 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-406-6161 |
| Primary Part Number | 1161912 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 5 |
| First End Diameter | 2.1660 INCHES MINIMUM AND 2.1670 INCHES MAXIMUM IN |
| First End Distance From Keyway Center to End | 2.8125 INCHES NOMINAL IN |
| Second End Diameter | 1.9690 INCHES MINIMUM AND 1.9700 INCHES MAXIMUM IN |
| Largest Step Diameter | 2.500 INCHES MAXIMUM IN |
| Second End Distance From Keyway Center to End | 2.5000 INCHES NOMINAL IN |
| First End Style | INDENTED FLAT KEYWAY |
| Second End Keyway Width | 0.5000 INCHES NOMINAL IN |
| First End Keyway Depth | 0.250 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.250 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | STEEL COMP 1045 |
| External Keyway Length | 2.500 INCHES NOMINAL SECOND END IN |
| External Keyway Length | 3.000 INCHES NOMINAL FIRST END IN |
| First End Keyway Width | 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 |
|---|---|
| 1161912 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 7D3-04917 PIECE 28 | Lake Shore Systems, Inc. (USA) |
NSN 3040-01-406-6161 is a Shaft,shouldered, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-406-6161 has 2 manufacturer part numbers on file: 1161912 (Lake Shore Systems, Inc.), 7D3-04917 PIECE 28 (Lake Shore Systems, Inc.).
Key specifications for 1161912: Surface Finish: 63.0 MICROINCHES; Step Quantity: 5; First End Diameter: 2.1660 INCHES MINIMUM AND 2.1670 INCHES MAXIMUM IN; First End Distance From Keyway Center to End: 2.8125 INCHES NOMINAL IN. 17 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.