The Shaft,shouldered, cataloged under National Stock Number 3040-01-498-4830, 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 10 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-498-4830 |
| Primary Part Number | 1220D1182 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES |
| Step Quantity | 9 |
| First End Diameter | 3.3400 INCHES NOMINAL IN |
| Second End Diameter | 2.6000 INCHES NOMINAL IN |
| Largest Step Diameter | 3.698 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Material Document and Classification | QQ-N-286, CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | EXTERNAL THREADED |
| Material | NICKEL ALLOY K-500 |
| 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 |
|---|---|
| 1220D1182 | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 04-27-000 | D/9 Drawing number reference only Systems Engineering and Analytics, Inc. |
| 1220D1182 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 04-27-000 ITEM 2 | 3/9 Design control — primary reference Systems Engineering and Analytics, Inc. |
NSN 3040-01-498-4830 is a Shaft,shouldered, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-498-4830 has 1 manufacturer part number on file: 1220D1182 (Lockheed Martin Corporation Div Rms).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-499-1428. Verify interchangeability with system specifications before substitution.
Key specifications for 1220D1182: Surface Finish: 63.0 MICROINCHES; Step Quantity: 9; First End Diameter: 3.3400 INCHES NOMINAL IN; Second End Diameter: 2.6000 INCHES NOMINAL IN. 10 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.