The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-217-0905, 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 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-217-0905 |
| 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 | 0.1250 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.1250 INCHES NOMINAL SECOND RING IN |
| Ring Groove Width | 0.1870 INCHES NOMINAL FIFTH RING IN |
| Ring Groove Width | 0.1870 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Width | 0.1870 INCHES NOMINAL THIRD RING IN |
| Distance Between Pin Bosses | 2.000 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,NUMBER 5 PISTON ALL RINGS |
| Skirt Slot Style | HANGMAN SLOT |
| Oil Passage Type | HOLE AND SLOT FIFTH RING |
| Diameter | 4.500 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.260 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 4.275 INCHES NOMINAL FIFTH RING IN |
| Ring Groove Diameter | 4.285 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Diameter | 4.285 INCHES NOMINAL THIRD RING IN |
| Ring Groove Diameter | 4.305 INCHES NOMINAL SECOND RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.750 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | LOCKING |
| Oil Groove | INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 5 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.3750 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| 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 |
|---|---|
| 1519P | 3/9 Design control — primary reference Dana Corp Engine Products Div |
NSN 2805-00-217-0905 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): 4320-00-398-8742. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-00-217-0905: Overall Height: 5.562 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1250 INCHES NOMINAL FIRST RING IN; Ring Groove Width: 0.1250 INCHES NOMINAL SECOND RING IN. 29 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.