The Shaft,straight, cataloged under National Stock Number 3040-00-458-0669, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-00-458-0669 |
| Primary Part Number | 4519-1 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| First End Diameter | 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN |
| Second End Diameter | 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN |
| First End Style | PLAIN |
| Second End Groove Diameter | 0.2100 INCHES MINIMUM AND 0.2130 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0290 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 1.105 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED |
| Material | STEEL COMP 303SE |
| 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 |
|---|---|
| 4519-1 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 4519-1 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
NSN 3040-00-458-0669 is a Shaft,straight, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-458-0669 has 1 manufacturer part number on file: 4519-1 (Lockheed Martin Corporation Div Rms).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-395-1608. Verify interchangeability with system specifications before substitution.
Key specifications for 4519-1: Surface Finish: 32.0 MICROINCHES; First End Diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN; Second End Diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN; First End Style: PLAIN. 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.