The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-375-2786, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2815-00-375-2786 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.2500 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Width | 0.0850 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.0850 INCHES NOMINAL SECOND RING IN |
| Ring Groove Width | 0.0850 INCHES NOMINAL THIRD RING IN |
| Distance Between Pin Bosses | 1.938 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 4.495 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.269 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Distance From Pin Hole Center to Extreme Top | 3.362 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | INCLUDED |
| Pinhole Diameter | 1.6050 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 |
| Reference | Meaning |
|---|---|
| 54879341 | 5/9 Secondary reference Universal Motors-Oshkosh a Div of Medalist Industries Inc |
| 54879341 | 5/9 Secondary reference Energy Services Group Div of Cooper Industries Inc |
| 296803 | 3/9 Design control — primary reference Universal Motors-Oshkosh a Div of Medalist Industries Inc |
NSN 2815-00-375-2786 is a Piston,internal Combustion Engin, classified under FSC 2815, Diesel Engines and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 2815-01-228-0300. Verify interchangeability with system specifications before substitution.
Key specifications for 2815-00-375-2786: Overall Height: 5.993 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.2500 INCHES NOMINAL FOURTH RING IN; Ring Groove Width: 0.0850 INCHES NOMINAL FIRST RING IN. 24 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.