The Ring,piston, cataloged under National Stock Number 2815-00-273-0352, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-273-0352 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Status | ACTIVE |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 1 GROOVE OUTSIDE PERIPHERY |
| Oil Passage Type and Quantity | 4 SLOT HORIZONTALLY THROUGH RING |
| Radial Wall Thickness | 0.1440 INCHES MINIMUM AND 0.1540 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 4.000 INCHES IN |
| Material | IRON OVERALL |
| 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 |
|---|---|
| 3138PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 4353PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 2444PC2817A | 5/9 Secondary reference John Reiner & Co. Inc. |
| 3802PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 3101PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 4354PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 1989PC2817A | 5/9 Secondary reference John Reiner & Co. Inc. |
| 3803PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 1263PC2817A | 5/9 Secondary reference John Reiner & Co. Inc. |
| 2898PC2817A | 5/9 Secondary reference John Reiner & Co. Inc. |
| 4341PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 2817A | 3/9 Design control — primary reference Marine Engine Specialties Div of Mesco Tectonics Inc |
| 3100PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
| 1883PC2817A | 5/9 Secondary reference John Reiner & Co. Inc. |
| 3839PC17 | 5/9 Secondary reference John Reiner & Co. Inc. |
NSN 2815-00-273-0352 is a Ring,piston, classified under FSC 2815, Diesel Engines and Components. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5310-00-366-1102, 3120-01-419-8610. Verify interchangeability with system specifications before substitution.
Key specifications for 2815-00-273-0352: Overall Width: 0.1865 INCHES NOMINAL IN; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL; Joint Style: VERTICAL JOINT; Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY. 8 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.