The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-540-9517, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2815-00-540-9517 |
| Primary Part Number | A87183 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1270 INCHES MINIMUM AND 0.1290 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1280 INCHES MINIMUM AND 0.1290 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Width | 0.1300 INCHES MINIMUM AND 0.1310 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.3130 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM FIFTH RING IN |
| Ring Groove Width | 0.3130 INCHES MINIMUM AND 0.3140 INCHES MAXIMUM FOURTH RING IN |
| Distance Between Pin Bosses | 2.062 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 LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 5.360 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.831 INCHES MINIMUM AND 4.846 INCHES MAXIMUM FIFTH RING IN |
| Ring Groove Diameter | 4.831 INCHES MINIMUM AND 4.846 INCHES MAXIMUM FOURTH RING IN |
| Ring Groove Diameter | 4.920 INCHES MINIMUM AND 4.925 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 4.920 INCHES MINIMUM AND 4.925 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 4.920 INCHES MINIMUM AND 4.925 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 3.063 INCHES MINIMUM AND 3.067 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | CAVITY |
| Ring Groove Quantity | 5 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.7497 INCHES MINIMUM AND 1.7505 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 2815-00-540-9517 is a Piston,internal Combustion Engin, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-540-9517 has 2 manufacturer part numbers on file: A87183 (Naval Inventory Control Point Mechanicsburg), A87183 (Capitol Engine Co, Inc Dba Salmini Worldwide).
Key specifications for A87183: Overall Height: 5.469 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1270 INCHES MINIMUM AND 0.1290 INCHES MAXIMUM FIRST RING IN; Ring Groove Width: 0.1280 INCHES MINIMUM AND 0.1290 INCHES MAXIMUM THIRD RING 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.