The Shaft,shouldered, cataloged under National Stock Number 3040-01-379-9078, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-379-9078 |
| Primary Part Number | 1210D3298 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 2.0000 INCHES NOMINAL IN |
| Second End Diameter | 1.0000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.0000 INCHES NOMINAL IN |
| First End Hole Depth | 0.9960 INCHES NOMINAL IN |
| Second End Angle Between Keyways | 0.0 DEGREES MAXIMUM |
| First End Style | UNTHREADED CROSS DRILLED |
| Second End Keyway Width | 0.1880 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.1410 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| First End Hole Diameter | 0.3590 INCHES NOMINAL IN |
| Second End Style | TWO FLAT KEYWAYS |
| Material | STEEL COMP 303 |
| First End Distance From Hole Center to End | 0.5600 INCHES NOMINAL IN |
| External Keyway Length | 0.8700 INCHES NOMINAL SECOND END 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 |
|---|---|
| 1210D3298 | Lake Shore Systems, Inc. (USA) |
| 1210D3298 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1210D3298 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3040-01-379-9078 is a Shaft,shouldered, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-379-9078 has 2 manufacturer part numbers on file: 1210D3298 (Lake Shore Systems, Inc.), 1210D3298 (Lockheed Martin Corporation Div Rms).
Key specifications for 1210D3298: Step Quantity: 4; First End Diameter: 2.0000 INCHES NOMINAL IN; Second End Diameter: 1.0000 INCHES NOMINAL IN; Largest Step Diameter: 2.0000 INCHES NOMINAL IN. 15 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.