The Ring,piston, cataloged under National Stock Number 2805-00-640-8628, 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 7 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-640-8628 |
| Primary Part Number | DC161-1 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Wisconsin Motors, Llc |
| Status | ACTIVE |
| FSC Application Data | PISTON,GASOLINE ENGINE |
| Cross-Sectional Shape Style | STRAIGHT FACE, BOTTOM RELIEF |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1200 INCHES MINIMUM AND 0.1300 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 2.875 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 |
|---|---|
| DC161-1 PRIMARY | Wisconsin Motors, Llc (USA) |
NSN 2805-00-640-8628 is a Ring,piston, manufactured by Wisconsin Motors, Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-640-8628 has 1 manufacturer part number on file: DC161-1 (Wisconsin Motors, Llc).
Key specifications for DC161-1: FSC Application Data: PISTON,GASOLINE ENGINE; Overall Width: 0.0930 INCHES NOMINAL IN; Cross-Sectional Shape Style: STRAIGHT FACE, BOTTOM RELIEF; 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.