The Ring,piston, cataloged under National Stock Number 2805-00-876-7249, 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 7 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-876-7249 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Status | ACTIVE |
| FSC Application Data | PISTON,COMPRESSON |
| Cross-Sectional Shape Style | BEVELED FACE, SCRAPER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1540 INCHES MINIMUM AND 0.1640 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 3.750 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 |
|---|---|
| XWA553 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| MK2080 | 5/9 Secondary reference Lodestone Corp Div of Fedders Corp |
| XWA553 | 3/9 Design control — primary reference Spx Corp |
| 20260R | 5/9 Secondary reference Lodestone Corp Div of Fedders Corp |
| 551784 | 5/9 Secondary reference Lodestone Corp Div of Fedders Corp |
| 551784 | 5/9 Secondary reference Fedders North America Inc |
NSN 2805-00-876-7249 is a Ring,piston, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4310-01-135-0395. Verify interchangeability with system specifications before substitution.
Key specifications for 2805-00-876-7249: FSC Application Data: PISTON,COMPRESSON; Overall Width: 0.1230 INCHES MINIMUM AND 0.1235 INCHES MAXIMUM IN; Cross-Sectional Shape Style: BEVELED FACE, SCRAPER; Joint Style: VERTICAL JOINT. 7 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.