The Shaft,shouldered, cataloged under National Stock Number 3040-01-426-4985, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3040-01-426-4985 |
| Primary Part Number | 593-6960883 PC 1 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 10.0 MICROINCHES |
| Step Quantity | 5 |
| First End Diameter | 1.5548 INCHES MINIMUM AND 1.5830 INCHES MAXIMUM IN |
| Second End Diameter | 1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN |
| Largest Step Diameter | 2.4970 INCHES MINIMUM AND 2.5030 INCHES MAXIMUM IN |
| First End External Thread Length | 0.5940 INCHES MINIMUM AND 0.5990 INCHES MAXIMUM IN |
| Second End Angle Between Keyways | 89.9 DEGREES MINIMUM AND 90.0 DEGREES MAXIMUM |
| First End Style | CIRCULAR GROOVED FLAT KEYWAY AND EXTERNALLY THREADED |
| Second End Keyway Width | 0.4380 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN |
| First End Keyway Depth | 0.1560 INCHES MINIMUM AND 0.1640 INCHES MAXIMUM IN |
| Second End Keyway Depth | 0.2190 INCHES MINIMUM AND 0.2200 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.5940 INCHES MINIMUM AND 0.5990 INCHES MAXIMUM IN |
| First End Groove Diameter | 1.4770 INCHES MINIMUM AND 1.4790 INCHES MAXIMUM IN |
| Second End Style | TWO FLAT KEYWAYS |
| Material | STEEL |
| First End Groove Width | 0.1250 INCHES MINIMUM AND 0.1410 INCHES MAXIMUM IN |
| External Keyway Length | 0.8500 INCHES MINIMUM AND 0.8700 INCHES MAXIMUM FIRST END IN |
| External Keyway Length | 2.7500 INCHES NOMINAL SECOND END IN |
| First End Keyway Width | 0.3120 INCHES MINIMUM AND 0.3280 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 | X |
| Part Number | Manufacturer |
|---|---|
| 593-6960883 PC 1 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6960883 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-426-4985 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-426-4985 has 1 manufacturer part number on file: 593-6960883 PC 1 (Naval Sea Systems Command).
Key specifications for 593-6960883 PC 1: Surface Finish: 10.0 MICROINCHES; Step Quantity: 5; First End Diameter: 1.5548 INCHES MINIMUM AND 1.5830 INCHES MAXIMUM IN; Second End Diameter: 1.7490 INCHES MINIMUM AND 1.7500 INCHES MAXIMUM IN. 20 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.