The Shaft,shouldered, cataloged under National Stock Number 3040-01-194-6748, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-194-6748 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.8750 INCHES NOMINAL IN |
| Largest Step Diameter | 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN |
| First End External Thread Length | 0.938 INCHES NOMINAL IN |
| First End Style | EXTERNAL THREADED |
| Material Document and Classification | QQ-N-281 LCASS A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | IDENTICAL |
| Material | NICKEL ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SSN637-501-2143875 PIECE 30 | 5/2 Secondary reference U.S. Government activity |
| SSN637-501-2143875 | D/9 Drawing number reference only U.S. Government activity |
| 77643-74 X 2 PIECE 30 | 3/2 Design control — primary reference U.S. Government activity |
| 77643-74 X 2 | D/9 Drawing number reference only U.S. Government activity |
NSN 3040-01-194-6748 is a Shaft,shouldered, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
4 possible matches (shared part number, not a government interchangeability claim): 3020-01-194-6965, 3020-01-194-6966, 3040-01-194-7877. Verify interchangeability with system specifications before substitution.
Key specifications for 3040-01-194-6748: Surface Finish: 125.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.8750 INCHES NOMINAL IN; Largest Step Diameter: 1.247 INCHES MINIMUM AND 1.248 INCHES MAXIMUM IN. 9 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 3040-01-194-6748 has DEMIL Code Q. 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.