The Ring,piston, cataloged under National Stock Number 2805-01-240-5374, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-01-240-5374 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| FSC Application Data | ENGINE CYLINDER,AIRCRAFT |
| Cross-Sectional Shape Style | STRAIGHT FACE, DOUBLE SCRAPER, VENTILATED OIL CONTROL |
| Joint Style | VERTICAL JOINT |
| Oil Passage Type and Quantity | 4 SLOT OUTSIDE PERIPHERY |
| Radial Wall Thickness | 0.0300 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | GRAPHITE OVERALL |
| Standard Bore Diameter | 1.566 INCHES IN |
| Material | PLASTIC TETRAFLUOROETHYLENE 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 |
|---|---|
| 3030T46P01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-01-240-5374 is a Ring,piston, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
Key specifications for 2805-01-240-5374: FSC Application Data: ENGINE CYLINDER,AIRCRAFT; Overall Width: 0.1310 INCHES MINIMUM AND 0.1350 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.