The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-033-5013, 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 28 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-033-5013 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| Carbon Groove | INCLUDED |
| Ring Groove Width | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1265 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1875 INCHES MINIMUM AND 0.1885 INCHES MAXIMUM FOURTH RING IN |
| Ring Groove Width | 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM THIRD RING IN |
| Distance Between Pin Bosses | 1.812 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5 PISTON ALL RINGS |
| Oil Passage Type | SLOT AND HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 4.312 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.876 INCHES MINIMUM AND 3.886 INCHES MAXIMUM FOURTH RING IN |
| Ring Groove Diameter | 3.876 INCHES MINIMUM AND 3.886 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Diameter | 3.916 INCHES MINIMUM AND 3.926 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.916 INCHES MINIMUM AND 3.926 INCHES MAXIMUM SECOND RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.622 INCHES MINIMUM AND 2.627 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 5 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.2499 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| 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 |
|---|---|
| T427A404 | 3/9 Design control — primary reference Teledyne Continental Motors Industrial Products Div Teledyne Industries Inc Sub of Teledyne Inc |
NSN 2805-00-033-5013 is a Piston,internal Combustion Engin, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-00-033-5013: Overall Height: 4.684 INCHES MINIMUM AND 4.689 INCHES MAXIMUM IN; Carbon Groove: INCLUDED; Ring Groove Width: 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM SECOND RING IN; Ring Groove Width: 0.1265 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM FIRST 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.