The Ring,piston, cataloged under National Stock Number 2805-00-378-8739, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 8 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. 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 | 2805-00-378-8739 |
| Primary Part Number | DC111 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Wisconsin Motors, Llc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | BEVELED FACE, DOUBLE SCRAPER |
| Joint Style | DIAGONAL JOINT |
| Oil Passage Type and Quantity | 1 GROOVE OUTSIDE PERIPHERY |
| Radial Wall Thickness | 0.1400 INCHES MINIMUM AND 0.1500 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Standard Bore Diameter | 3.500 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 |
|---|---|
| DC111 PRIMARY | Wisconsin Motors, Llc (USA) |
NSN 2805-00-378-8739 is a Ring,piston, manufactured by Wisconsin Motors, Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-378-8739 has 1 manufacturer part number on file: DC111 (Wisconsin Motors, Llc).
2 possible matches (shared part number, not a government interchangeability claim): 5935-00-631-0105, 3040-01-048-6226. Verify interchangeability with system specifications before substitution.
Key specifications for DC111: Overall Width: 0.1860 INCHES MINIMUM AND 0.1865 INCHES MAXIMUM IN; Cross-Sectional Shape Style: BEVELED FACE, DOUBLE SCRAPER; Joint Style: DIAGONAL JOINT; Oil Passage Type and Quantity: 1 GROOVE OUTSIDE PERIPHERY. 8 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.