The Shaft,shouldered, cataloged under National Stock Number 3040-01-177-4745, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-177-4745 |
| Primary Part Number | 709-4684875 ITEM 16 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES |
| Step Quantity | 3 |
| First End Diameter | 0.9842 INCHES MINIMUM AND 0.9846 INCHES MAXIMUM IN |
| Largest Step Diameter | 1.200 INCHES NOMINAL IN |
| First End Style | CIRCULAR GROOVED |
| End Similarity | IDENTICAL |
| First End Distance From End to Groove | 0.090 INCHES NOMINAL IN |
| First End Groove Diameter | 0.9350 INCHES MINIMUM AND 0.9390 INCHES MAXIMUM IN |
| Material | STEEL |
| First End Groove Width | 0.0860 INCHES MINIMUM AND 0.0910 INCHES MAXIMUM 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 |
|---|---|
| 709-4684875 ITEM 16 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 709-4684875 | D/9 Drawing number reference only U.S. Government activity |
| 87832-1604 ITEM 16 | 3/2 Design control — primary reference U.S. Government activity |
| 87832-1604 | D/9 Drawing number reference only U.S. Government activity |
| 709-4684875 ITEM 16 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-177-4745 is a Shaft,shouldered, manufactured by Naval Sea Systems Command, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-177-4745 has 1 manufacturer part number on file: 709-4684875 ITEM 16 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-182-6844, 3010-01-211-9524. Verify interchangeability with system specifications before substitution.
Key specifications for 709-4684875 ITEM 16: Surface Finish: 32.0 MICROINCHES; Step Quantity: 3; First End Diameter: 0.9842 INCHES MINIMUM AND 0.9846 INCHES MAXIMUM IN; Largest Step Diameter: 1.200 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.