The Shaft,shouldered, cataloged under National Stock Number 3040-01-448-8770, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-448-8770 |
| Primary Part Number | 167-6404610-49 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| First End Width Across Flats | 0.4320 INCHES NOMINAL IN |
| Second End External Thread Length | 0.9900 INCHES NOMINAL IN |
| Step Quantity | 4 |
| First End Diameter | 1.1220 INCHES NOMINAL IN |
| First End Step Length | 0.2100 INCHES NOMINAL IN |
| Second End Diameter | 0.8750 INCHES NOMINAL IN |
| Largest Step Diameter | 1.1220 INCHES NOMINAL IN |
| First End Style | HEXAGONAL |
| Material Document and Classification | QQ-N-286, FORM 2, COND ANL FED SPEC SINGLE MATERIAL RESPONSE |
| Second End Groove Diameter | 0.7000 INCHES NOMINAL IN |
| End Similarity | NOT IDENTICAL |
| Second End Groove Width | 0.3800 INCHES NOMINAL IN |
| Second End Distance From End to Groove | 0.9900 INCHES NOMINAL IN |
| Second End Style | CIRCULAR GROOVED AND EXTERNALLY THREADED |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 167-6404610-49 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| DF1502-238 FIND 49 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 6404610 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-448-8770 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-448-8770 has 1 manufacturer part number on file: 167-6404610-49 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-448-8778, 3040-01-448-8781, 3040-01-449-2740. Verify interchangeability with system specifications before substitution.
Key specifications for 167-6404610-49: First End Width Across Flats: 0.4320 INCHES NOMINAL IN; Second End External Thread Length: 0.9900 INCHES NOMINAL IN; Step Quantity: 4; First End Diameter: 1.1220 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.