The Shaft,straight, cataloged under National Stock Number 3040-00-973-0244, 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 Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-00-973-0244 |
| Primary Part Number | SMB423581 |
| Item Name | Shaft,straight |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories |
| Status | ACTIVE |
| First End Diameter | 0.3120 INCHES NOMINAL IN |
| Second End Diameter | 0.3120 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Second End Groove Diameter | 0.2500 INCHES NOMINAL IN |
| End Similarity | IDENTICAL |
| First End Distance From End to Groove | 0.1610 INCHES NOMINAL IN |
| Second End Groove Width | 0.2900 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.1610 INCHES NOMINAL IN |
| First End Groove Diameter | 0.2500 INCHES NOMINAL IN |
| Material | STEEL |
| First End Groove Width | 0.2900 INCHES NOMINAL 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 |
|---|---|
| SMB423581 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories (USA) |
| Reference | Meaning |
|---|---|
| SMB423581 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 3040-00-973-0244 is a Shaft,straight, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-973-0244 has 1 manufacturer part number on file: SMB423581 (Lockheed Martin Corporation Dba Lockheed Martin Aerostructures Div Advanced Technology Laboratories).
Key specifications for SMB423581: First End Diameter: 0.3120 INCHES NOMINAL IN; Second End Diameter: 0.3120 INCHES NOMINAL IN; First End Style: CIRCULAR GROOVED; Overall Length: 3.680 INCHES NOMINAL IN. 11 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.