The Ring,piston, cataloged under National Stock Number 2815-01-345-1068, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is John Crane, Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring,piston |
| FSC / FSG | 2815 — Diesel Engines and Components (FSG 28) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); John Crane, Inc (CAGE 71724) |
| Parameter | Value |
|---|---|
| NSN | 2815-01-345-1068 |
| Primary Part Number | T56103290027588 |
| Item Name | Ring,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | John Crane, Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| 1731110 | Oshkosh Defense Llc (USA) |
| T56103290027588 PRIMARY | John Crane, Inc (USA) |
| Reference | Meaning |
|---|---|
| 1731110 | 5/9 Secondary reference John Crane, Inc |
| T561-0329-002 | D/9 Drawing number reference only John Crane, Inc |
| 1731110 | 5/9 Secondary reference Oshkosh Corp |
NSN 2815-01-345-1068 is a Ring,piston, manufactured by John Crane, Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-345-1068 has 2 manufacturer part numbers on file: 1731110 (Oshkosh Defense Llc), T56103290027588 (John Crane, Inc).
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.