The Ring,piston, cataloged under National Stock Number 2805-00-406-2242, 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 Textron Inc Jacobsen Div. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-406-2242 |
| Primary Part Number | 203541 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Textron Inc Jacobsen Div |
| Status | ACTIVE |
| FSC Application Data | GASOLINE ENGINE,NONAIR |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.2430 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | OXIDE OVERALL |
| Standard Bore Diameter | 2.000 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 |
|---|---|
| 203541 PRIMARY | Textron Inc Jacobsen Div (USA) |
| Reference | Meaning |
|---|---|
| SC-B-33354 | 5/2 Secondary reference U.S. Government activity |
NSN 2805-00-406-2242 is a Ring,piston, manufactured by Textron Inc Jacobsen Div, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-406-2242 has 1 manufacturer part number on file: 203541 (Textron Inc Jacobsen Div).
3 possible matches (shared part number, not a government interchangeability claim): 3030-00-869-3419, 1650-00-981-8015, 5330-01-008-6534. Verify interchangeability with system specifications before substitution.
Key specifications for 203541: FSC Application Data: GASOLINE ENGINE,NONAIR; Overall Width: 0.0890 INCHES MINIMUM AND 0.0900 INCHES MAXIMUM IN; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT. 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.