The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-128-9778, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 28 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-128-9778 |
| Primary Part Number | DB209-5S20 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Wisconsin Motors, Llc |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0950 INCHES NOMINAL SECOND RING IN |
| Ring Groove Width | 0.1880 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Width | 0.0950 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.0950 INCHES NOMINAL THIRD RING IN |
| Distance Between Pin Bosses | 1.354 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 3.000 INCHES NOMINAL IN |
| Ring Groove Diameter | 2.628 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Diameter | 2.672 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 2.672 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 2.672 INCHES NOMINAL THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.500 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Oversize | 0.020 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 0.7500 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLID |
| 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 |
|---|---|
| DB209-5S20 PRIMARY | Wisconsin Motors, Llc (USA) |
| Reference | Meaning |
|---|---|
| DB209-3S20 | 5/9 Secondary reference Wisconsin Motors, Llc |
| 1527P3520 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| 1527P3520 | 5/9 Secondary reference Spx Corp |
NSN 2805-00-128-9778 is a Piston,internal Combustion Engin, manufactured by Wisconsin Motors, Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-128-9778 has 1 manufacturer part number on file: DB209-5S20 (Wisconsin Motors, Llc).
Key specifications for DB209-5S20: Overall Height: 2.875 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0950 INCHES NOMINAL SECOND RING IN; Ring Groove Width: 0.1880 INCHES NOMINAL FOURTH RING IN. 28 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.