The Piston,internal Combustion Engin, cataloged under National Stock Number 2810-00-508-7015, 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 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.. Government technical data includes 28 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2810-00-508-7015 |
| Primary Part Number | 272903 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2810 / 28 — Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components |
| Manufacturer | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. |
| Status | ACTIVE |
| FSC Application Data | ENGINE,AIRCRAFT,RECIPROCATING |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 10.1300 INCHES NOMINAL AND 0.0990 INCHES NOMINAL AND 0.0970 INCHES NOMINAL AND 0.2220 INCHES NOMINAL AND 0.1290 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Distance Between Pin Bosses | 2.550 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5 PISTON ALL RINGS |
| Oil Passage Type | HOLE AND SLOT LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 5.722 INCHES NOMINAL IN |
| Ring Groove Diameter | 5.169 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 5.192 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 5.192 INCHES NOMINAL THIRD RING IN |
| Ring Groove Diameter | 5.207 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Diameter | 5.296 INCHES NOMINAL FIFTH RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.348 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | CONCAVE |
| Ring Groove Quantity | 5 |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.3730 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLID |
| 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 |
|---|---|
| 272903 PRIMARY | Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN) |
NSN 2810-00-508-7015 is a Piston,internal Combustion Engin, manufactured by Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp., classified under FSC 2810, Gasoline Reciprocating Engines, Aircraft Prime Mover; and Components. Status: active.
NSN 2810-00-508-7015 has 1 manufacturer part number on file: 272903 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).
1 possible match (shared part number, not a government interchangeability claim): 2810-00-920-1043. Verify interchangeability with system specifications before substitution.
Key specifications for 272903: Overall Height: 4.320 INCHES NOMINAL IN; FSC Application Data: ENGINE,AIRCRAFT,RECIPROCATING; Carbon Groove: NOT INCLUDED; Ring Groove Width: 10.1300 INCHES NOMINAL AND 0.0990 INCHES NOMINAL AND 0.0970 INCHES NOMINAL AND 0.2220 INCHES NOMINAL AND 0.1290 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. 28 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.