The Shaft,shouldered, cataloged under National Stock Number 3040-01-179-9985, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Hamilton Sundstrand Corporation Div Mission Systems. Government technical data includes 15 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-179-9985 |
| Primary Part Number | 354931 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Hamilton Sundstrand Corporation Div Mission Systems |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| FSC Application Data | CAMERA,STILL PICTURE |
| Step Quantity | 6 |
| First End Diameter | 0.2498 INCHES NOMINAL IN |
| Second End Diameter | 0.3800 INCHES NOMINAL IN |
| Largest Step Diameter | 0.380 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| First End Distance From End to Groove | 0.060 INCHES NOMINAL IN |
| First End Groove Diameter | 0.2300 INCHES NOMINAL IN |
| Second End Style | INTERNAL THREADED |
| Material | STEEL COMP 303 |
| First End Groove Width | 0.0290 INCHES NOMINAL IN |
| Second End Internal Thread Length | 0.310 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 |
|---|---|
| 354931 PRIMARY | Hamilton Sundstrand Corporation Div Mission Systems (USA) |
NSN 3040-01-179-9985 is a Shaft,shouldered, manufactured by Hamilton Sundstrand Corporation Div Mission Systems, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-179-9985 has 1 manufacturer part number on file: 354931 (Hamilton Sundstrand Corporation Div Mission Systems).
1 possible match (shared part number, not a government interchangeability claim): 6515-01-492-7080. Verify interchangeability with system specifications before substitution.
Key specifications for 354931: Surface Finish: 32.0 MICROINCHES; FSC Application Data: CAMERA,STILL PICTURE; Step Quantity: 6; First End Diameter: 0.2498 INCHES NOMINAL IN. 15 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.