The Ring,piston, cataloged under National Stock Number 2805-00-522-1694, 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 10 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 | 2805-00-522-1694 |
| Primary Part Number | 553674 |
| 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 | BARREL ASSEMBLY,PROPELLED VARIABLE PITCH,AIRCRAFT |
| Surface Treatment Document and Classification | AMS2408 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.1300 INCHES MINIMUM AND 0.1400 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | TIN OVERALL |
| Standard Bore Diameter | 3.200 INCHES IN |
| Material | IRON 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 |
|---|---|
| 553674 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 2805-00-522-1694 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 2805-00-522-1694 has 1 manufacturer part number on file: 553674 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 553674: FSC Application Data: BARREL ASSEMBLY,PROPELLED VARIABLE PITCH,AIRCRAFT; Surface Treatment Document and Classification: AMS2408 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Width: 0.1630 INCHES MINIMUM AND 0.1650 INCHES MAXIMUM IN; Material Document and Classification: AMS7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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 2805-00-522-1694 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.