The Shaft,shouldered, cataloged under National Stock Number 3040-00-072-8880, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-072-8880 |
| Primary Part Number | 3-13420-1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 8 |
| First End Diameter | 1.4050 INCHES MINIMUM AND 1.4150 INCHES MAXIMUM IN |
| First End Spline Major Diameter | 1.3100 INCHES MINIMUM AND 1.3110 INCHES MAXIMUM IN |
| Second End Diameter | 1.4970 INCHES MINIMUM AND 1.4990 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.497 INCHES MINIMUM AND 1.499 INCHES MAXIMUM IN |
| Second End Spline Minor Diameter | 1.0600 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Spline Major Diameter | 1.4050 INCHES MINIMUM AND 1.4150 INCHES MAXIMUM IN |
| Second End Groove Diameter | 1.1700 INCHES MINIMUM AND 1.1800 INCHES MAXIMUM IN |
| First End Spline Length | 1.040 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.0560 INCHES MINIMUM AND 0.0610 INCHES MAXIMUM IN |
| Second End Distance From End to Groove | 1.210 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Second End Style | CIRCULAR GROOVED AND SPLINED (STRAIGHT) |
| First End Spline Minor Diameter | 1.1780 INCHES MINIMUM AND 1.1860 INCHES MAXIMUM IN |
| Material | STEEL COMP 17-4PH |
| Second End Spline Length | 1.340 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 3-13420-1 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 3-13420-1 | 5/9 Secondary reference Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector |
| 3-13420-1 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems |
NSN 3040-00-072-8880 is a Shaft,shouldered, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-072-8880 has 1 manufacturer part number on file: 3-13420-1 (Northrop Grumman Systems Corporation).
Key specifications for 3-13420-1: Surface Finish: 125.0 MICROINCHES; Step Quantity: 8; First End Diameter: 1.4050 INCHES MINIMUM AND 1.4150 INCHES MAXIMUM IN; First End Spline Major Diameter: 1.3100 INCHES MINIMUM AND 1.3110 INCHES MAXIMUM IN. 18 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.