The Ring Set,piston, cataloged under National Stock Number 2815-00-421-3868, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Perkins Engines Inc. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 2815-00-421-3868 |
| Primary Part Number | 411578057 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Perkins Engines Inc |
| Status | ACTIVE |
| Ring Set Component Parts | RING,OIL 1; EXPANDER,2; RING,COMPRESSION 2; RING,8 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 91.0 MILLIMETERS MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2815-00-421-3868 is a Ring Set,piston, manufactured by Perkins Engines Inc, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-421-3868 has 2 manufacturer part numbers on file: 411578057 (Perkins Engines Inc), 84957 (Perkins Engines Co Ltd).
2 possible matches (shared part number, not a government interchangeability claim): 1355-01-042-3546, 3020-01-178-6662. Verify interchangeability with system specifications before substitution.
Key specifications for 411578057: Ring Set Component Parts: RING,OIL 1; EXPANDER,2; RING,COMPRESSION 2; RING,8; Piston Accommodation Quantity: 1; Standard Bore Diameter: 91.0 MILLIMETERS MM. 3 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.