The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-01-061-5224, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-01-061-5224 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0700 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Distance Between Pin Bosses | 1.524 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHEDFINISHED |
| Diameter | 2.250 INCHES NOMINAL2.250 INCHES NOMINAL IN |
| Ring Groove Diameter | 2.003 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Distance From Pin Hole Center to Extreme Top | 1.058 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLATFLAT |
| Ring Groove Quantity | 22 |
| Oversize | 0.030 INCHES NOMINAL0.030 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDEDNOT INCLUDED |
| Finished Size Designation | OVERSIZEOVERSIZE |
| Ring | INCLUDED |
| Pinhole Diameter | 0.5000 INCHES NOMINAL0.5000 INCHES NOMINAL IN |
| Pin Hole Bushing | INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLIDSOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 62884 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-01-061-5224 is a Piston,internal Combustion Engin, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5940-01-474-2859. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-01-061-5224: Overall Height: 1.715 INCHES NOMINAL1.715 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0700 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN; Distance Between Pin Bosses: 1.524 INCHES NOMINAL IN. 21 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.