The Shaft,shouldered, cataloged under National Stock Number 3040-01-379-9084, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-379-9084 |
| Primary Part Number | 1210D3495 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Second End External Thread Length | 0.5000 INCHES NOMINAL IN |
| Step Quantity | 5 |
| First End Diameter | 0.3750 INCHES NOMINAL IN |
| Second End Diameter | 0.3120 INCHES NOMINAL IN |
| Largest Step Diameter | 0.5000 INCHES NOMINAL IN |
| First End External Thread Length | 12.1600 INCHES NOMINAL IN |
| Second End Distance From Keyway Center to End | 1.0900 INCHES NOMINAL IN |
| First End Style | EXTERNALLY AND INTERNALLY THREADED |
| Second End Keyway Width | 0.6300 INCHES MAXIMUM IN |
| First End Internal Thread Length | 0.3800 INCHES NOMINAL IN |
| Second End Groove Diameter | 0.2300 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0600 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 14.6900 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED WOODRUFF KEYWAY AND EXTERNALLY THREADED |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 1210D3495 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 1210D3495 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3040-01-379-9084 is a Shaft,shouldered, manufactured by Lake Shore Systems, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-379-9084 has 1 manufacturer part number on file: 1210D3495 (Lake Shore Systems, Inc.).
Key specifications for 1210D3495: Second End External Thread Length: 0.5000 INCHES NOMINAL IN; Step Quantity: 5; First End Diameter: 0.3750 INCHES NOMINAL IN; Second End Diameter: 0.3120 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.