The Ring,piston, cataloged under National Stock Number 2810-00-293-3927, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. 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 | 2810-00-293-3927 |
| Primary Part Number | 39711P20 |
| Item Name | Ring,piston |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Bore Diameter Oversize | 0.020 INCHES IN |
| Material Document and Classification | AMS 7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | BEVELED FACE, SCRAPER, BOTTOM RELIEF |
| Radial Wall Thickness | 0.0930 INCHES MINIMUM AND 0.0940 INCHES MAXIMUM IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 5.520 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 |
|---|---|
| 39711P20 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 2810-00-293-3927 is a Ring,piston, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-293-3927 has 1 manufacturer part number on file: 39711P20 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 39711P20: Bore Diameter Oversize: 0.020 INCHES IN; Overall Width: 0.1920 INCHES NOMINAL IN; Material Document and Classification: AMS 7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: BEVELED FACE, SCRAPER, BOTTOM RELIEF. 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.