The Shaft,shouldered, cataloged under National Stock Number 3040-01-197-3657, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-197-3657 |
| Primary Part Number | 1210C1909 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Second End Hole Diameter | 0.0780 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 0.2490 INCHES NOMINAL IN |
| Second End Diameter | 0.3430 INCHES NOMINAL IN |
| Largest Step Diameter | 0.3745 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-763 TYPE 304 FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Distance From Hole Center to End | 0.380 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Style | UNTHREADED CROSS DRILLED |
| 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 |
|---|---|
| 1213D1901 FIND 4 | Lockheed Martin Corporation Div Rms (USA) |
| 1210C1909 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1210C1909 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 1213D1901 FIND 4 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3040-01-197-3657 is a Shaft,shouldered, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-197-3657 has 2 manufacturer part numbers on file: 1213D1901 FIND 4 (Lockheed Martin Corporation Div Rms), 1210C1909 (Lockheed Martin Corporation Div Rms).
Key specifications for 1210C1909: Surface Finish: 32.0 MICROINCHES; Second End Hole Diameter: 0.0780 INCHES NOMINAL IN; Step Quantity: 3; First End Diameter: 0.2490 INCHES NOMINAL IN. 12 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.