The Shaft,shouldered, cataloged under National Stock Number 3040-01-253-9429, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Astronautics Corporation of America. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-253-9429 |
| Primary Part Number | 117758-003 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Astronautics Corporation of America |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.0934 INCHES NOMINAL IN |
| Largest Step Diameter | 0.1248 INCHES NOMINAL IN |
| First End Style | PLAIN |
| Material Document and Classification | QQ-S-764 COND A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | STEEL COMP 303 |
| 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 |
|---|---|
| 117758-003 PRIMARY | Astronautics Corporation of America (USA) |
| Reference | Meaning |
|---|---|
| 117758 | D/9 Drawing number reference only Astronautics Corporation of America |
NSN 3040-01-253-9429 is a Shaft,shouldered, manufactured by Astronautics Corporation of America, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-253-9429 has 1 manufacturer part number on file: 117758-003 (Astronautics Corporation of America).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-435-9173. Verify interchangeability with system specifications before substitution.
Key specifications for 117758-003: Surface Finish: 32.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.0934 INCHES NOMINAL IN; Largest Step Diameter: 0.1248 INCHES NOMINAL IN. 8 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.