The Ring,piston, cataloged under National Stock Number 2805-00-914-2785, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-914-2785 |
| Primary Part Number | 22051 |
| Item Name | Ring,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| FSC Application Data | AIR BLEED VALVE,JET ENGINE,AIRCRFT |
| Material Document and Classification | EY808 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | DOUBLE INSIDE BEVEL, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.1220 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.130 INCHES IN |
| Material | CARBON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 22051 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
| Reference | Meaning |
|---|---|
| 22051 | 5/9 Secondary reference United Technologies Corp Hamilton Sundstrand Corp |
NSN 2805-00-914-2785 is a Ring,piston, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-914-2785 has 1 manufacturer part number on file: 22051 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
5 possible matches (shared part number, not a government interchangeability claim): 5910-01-099-4137, 6210-01-117-1930, 5930-01-351-9598. Verify interchangeability with system specifications before substitution.
Key specifications for 22051: FSC Application Data: AIR BLEED VALVE,JET ENGINE,AIRCRFT; Overall Width: 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN; Material Document and Classification: EY808 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: DOUBLE INSIDE BEVEL, STRAIGHT FACE. 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.
NSN 2805-00-914-2785 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.