The Shaft,shouldered, cataloged under National Stock Number 3040-01-301-9108, 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 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-301-9108 |
| Primary Part Number | 87832-1608A ITEM 9 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Step Quantity | 7 |
| First End Diameter | 0.5550 INCHES NOMINAL IN |
| First End Step Length | 1.9500 INCHES NOMINAL IN |
| Second End Diameter | 0.7480 INCHES NOMINAL IN |
| First End Style | SQUARE (ROUND CORNERS) |
| Material Document and Classification | QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE |
| End Similarity | NOT IDENTICAL |
| Second End Style | INDENTED FLAT KEYWAY |
| Material | NICKEL ALLOY 400 |
| External Keyway Length | 1.0005 INCHES NOMINAL SECOND END 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 |
|---|---|
| 709-6129491 ITEM 9 | Naval Sea Systems Command (USA) |
| 87832-1608A ITEM 9 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6129491 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3040-01-301-9108 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-301-9108 has 2 manufacturer part numbers on file: 709-6129491 ITEM 9 (Naval Sea Systems Command), 87832-1608A ITEM 9 (Naval Sea Systems Command).
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-309-8146, 3020-01-309-8182, 3040-01-312-7709. Verify interchangeability with system specifications before substitution.
Key specifications for 87832-1608A ITEM 9: Step Quantity: 7; First End Diameter: 0.5550 INCHES NOMINAL IN; First End Step Length: 1.9500 INCHES NOMINAL IN; Second End Diameter: 0.7480 INCHES NOMINAL IN. 10 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.