The Ring,piston, cataloged under National Stock Number 2810-00-863-6558, is classified within Federal Supply Class 2810 (Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Curtiss-Wright Controls, Inc. Div Actuation Division. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-863-6558 |
| Primary Part Number | 148702Y2 |
| Item Name | Ring,piston |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| FSC Application Data | ENGINE,ACFT,RECIPROCATING |
| Cross-Sectional Shape Style | MULTI PIECE, POINTED FACE SCRAPER |
| Joint Style | VERTICAL JOINT |
| Radial Wall Thickness | 0.2100 INCHES MINIMUM AND 0.2110 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 6.125 INCHES IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 148702Y2 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| 4RS14870242 PRIMARY | United Ring & Seal, Inc (USA) |
NSN 2810-00-863-6558 is a Ring,piston, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-863-6558 has 2 manufacturer part numbers on file: 148702Y2 (Curtiss-Wright Controls, Inc. Div Actuation Division), 4RS14870242 (United Ring & Seal, Inc).
Key specifications for 148702Y2: FSC Application Data: ENGINE,ACFT,RECIPROCATING; Overall Width: 0.1110 INCHES MINIMUM AND 0.1130 INCHES MAXIMUM IN; Cross-Sectional Shape Style: MULTI PIECE, POINTED FACE SCRAPER; 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.