The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-528-5659, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-528-5659 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Status | ACTIVE |
| Carbon Groove | INCLUDED |
| Ring Groove Width | 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1875 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM FIFTH RING IN |
| Ring Groove Width | 0.1875 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM FOURTH RING IN |
| Distance Between Pin Bosses | 1.440 INCHES MINIMUM AND 1.480 INCHES MAXIMUM 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 | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 3.625 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.223 INCHES MINIMUM AND 3.233 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 3.263 INCHES MINIMUM AND 3.273 INCHES MAXIMUM FIRST RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.997 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 5 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.2475 INCHES MINIMUM AND 1.2482 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLID |
| Unable to Decode | UNABLE TO DECODE |
| 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 |
|---|---|
| 6373 | 5/9 Secondary reference U.S. Government activity |
| 75P2360 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2815-00-528-5659 is a Piston,internal Combustion Engin, classified under FSC 2815, Diesel Engines and Components. Status: active.
Key specifications for 2815-00-528-5659: Overall Height: 4.969 INCHES NOMINAL IN; Carbon Groove: INCLUDED; Ring Groove Width: 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM FIRST RING IN; Ring Groove Width: 0.1250 INCHES MINIMUM AND 0.1260 INCHES MAXIMUM SECOND RING IN. 25 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.