The Shaft,shouldered, cataloged under National Stock Number 3040-01-383-5865, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-383-5865 |
| Primary Part Number | 65850-05087-102 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Step Quantity | 4 |
| First End Diameter | 4.0480 INCHES NOMINAL IN |
| Second End Diameter | 2.9930 INCHES MAXIMUM IN |
| Largest Step Diameter | 4.0480 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 3.6140 INCHES MINIMUM IN |
| First End Style | PLAIN |
| Second End Spline Major Diameter | 3.8125 INCHES MAXIMUM IN |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 60 |
| Second End Pressure Angle | 30.0 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| Material | STEEL |
| Second End Pitch Diameter | 3.7500 INCHES NOMINAL IN |
| Second End Spline Length | 3.4200 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 65850-05087-102 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 3040-01-383-5865 is a Shaft,shouldered, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-383-5865 has 1 manufacturer part number on file: 65850-05087-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65850-05087-102: Step Quantity: 4; First End Diameter: 4.0480 INCHES NOMINAL IN; Second End Diameter: 2.9930 INCHES MAXIMUM IN; Largest Step Diameter: 4.0480 INCHES NOMINAL IN. 14 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.
NSN 3040-01-383-5865 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.