The Shaft,shouldered, cataloged under National Stock Number 3040-00-764-7906, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. Government technical data includes 22 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 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-00-764-7906 |
| Primary Part Number | 176540 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| FSC Application Data | WINCH ASSEMBLY AIRCRAFT |
| First End Pitch Diameter | 2.4370 INCHES NOMINAL IN |
| Step Quantity | 3 |
| First End Diameter | 2.5000 INCHES NOMINAL IN |
| First End Spline Major Diameter | 2.5000 INCHES NOMINAL IN |
| Second End Diameter | 2.5000 INCHES NOMINAL IN |
| Largest Step Diameter | 2.525 INCHES NOMINAL IN |
| Second End Spline Minor Diameter | 2.3750 INCHES NOMINAL IN |
| First End Style | SPLINED (INVOLUTE) |
| Second End Spline Major Diameter | 2.5000 INCHES NOMINAL IN |
| First End Pressure Angle | 30.0000 DEGREES NOMINAL |
| First End Spline Length | 0.6000 INCHES NOMINAL IN |
| First End Spline Quantity | 25 |
| End Similarity | NOT IDENTICAL |
| Second End Spline Quantity | 25 |
| Second End Pressure Angle | 30.0000 DEGREES NOMINAL |
| Second End Style | SPLINED (INVOLUTE) |
| First End Spline Minor Diameter | 2.3750 INCHES NOMINAL IN |
| Material | STEEL |
| Second End Pitch Diameter | 2.4370 INCHES NOMINAL IN |
| Second End Spline Length | 0.6400 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 |
|---|---|
| 176540 PRIMARY | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
NSN 3040-00-764-7906 is a Shaft,shouldered, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-00-764-7906 has 1 manufacturer part number on file: 176540 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
2 possible matches (shared part number, not a government interchangeability claim): 5815-00-925-7321, 5310-01-486-1176. Verify interchangeability with system specifications before substitution.
Key specifications for 176540: Surface Finish: 125.0 MICROINCHES; FSC Application Data: WINCH ASSEMBLY AIRCRAFT; First End Pitch Diameter: 2.4370 INCHES NOMINAL IN; Step Quantity: 3. 22 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 3040-00-764-7906 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.