The Shaft,shouldered, cataloged under National Stock Number 3040-01-191-6566, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Portland Valve Llc. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3040-01-191-6566 |
| Primary Part Number | V-6676 |
| Item Name | Shaft,shouldered |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Portland Valve Llc |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES |
| Step Quantity | 8 |
| First End Diameter | 2.2500 INCHES NOMINAL IN |
| First End Spline Major Diameter | 2.2500 INCHES NOMINAL IN |
| Second End Diameter | 2.7450 INCHES NOMINAL IN |
| Largest Step Diameter | 2.765 INCHES NOMINAL IN |
| First End Style | SPLINED (STRAIGHT) |
| Second End Slot Depth | 0.430 INCHES NOMINAL IN |
| First End Spline Length | 1.860 INCHES NOMINAL IN |
| First End Spline Quantity | 10 |
| End Similarity | NOT IDENTICAL |
| Second End Slot Width | 0.560 INCHES NOMINAL IN |
| Second End Style | SLOTTED |
| First End Spline Minor Diameter | 1.9350 INCHES NOMINAL IN |
| Material | STEEL |
| 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 |
|---|---|
| V-6676 PRIMARY | Portland Valve Llc (USA) |
| V-6676 ITEM 3 | Portland Valve Llc (USA) |
| Reference | Meaning |
|---|---|
| V-6683 | D/9 Drawing number reference only Portland Valve Llc |
| V-6587 PIECE 3 | C/1 Advisory reference — outside the item-of-supply concept Portland Valve Llc |
NSN 3040-01-191-6566 is a Shaft,shouldered, manufactured by Portland Valve Llc, classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-191-6566 has 2 manufacturer part numbers on file: V-6676 (Portland Valve Llc), V-6676 ITEM 3 (Portland Valve Llc).
1 possible match (shared part number, not a government interchangeability claim): 3040-01-191-6567. Verify interchangeability with system specifications before substitution.
Key specifications for V-6676: Surface Finish: 125.0 MICROINCHES; Step Quantity: 8; First End Diameter: 2.2500 INCHES NOMINAL IN; First End Spline Major Diameter: 2.2500 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.