The Ring,piston, cataloged under National Stock Number 2815-00-192-8765, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Lister Petter Ltd. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-192-8765 |
| Primary Part Number | 291-50210 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Lister Petter Ltd |
| Status | ACTIVE |
| FSC Application Data | DIESEL ENGINE |
| 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 | 10 SLOT HORIZONTALLY THROUGH RING |
| Radial Wall Thickness | 0.1540 INCHES MINIMUM AND 0.1610 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 |
| Part Number | Manufacturer |
|---|---|
| 291-50210 PRIMARY | Lister Petter Ltd (GBR) |
NSN 2815-00-192-8765 is a Ring,piston, manufactured by Lister Petter Ltd, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-192-8765 has 1 manufacturer part number on file: 291-50210 (Lister Petter Ltd).
Key specifications for 291-50210: FSC Application Data: DIESEL ENGINE; Overall Width: 0.1865 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN; Cross-Sectional Shape Style: STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL; Joint Style: VERTICAL JOINT. 9 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.