The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-01-006-7589, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Cummins Inc.. Government technical data includes 27 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 | 2815-01-006-7589 |
| Primary Part Number | AR12358 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0625 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.0625 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Width | 0.0730 INCHES MINIMUM AND 0.1500 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1890 INCHES NOMINAL FOURTH RING IN |
| Distance Between Pin Bosses | 1.680 INCHES MINIMUM AND 2.750 INCHES MAXIMUM IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 5.500 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.994 INCHES NOMINAL FOURTH RING IN |
| Ring Groove Diameter | 5.020 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 5.020 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 5.020 INCHES NOMINAL THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 3.750 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | CONCAVE |
| Ring Groove Quantity | 4 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.9940 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Skirt Type | SOLID |
| Groove Taper Angle | 10 DEGREE |
| 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 |
|---|---|
| AR12358 PRIMARY | Cummins Inc. (USA) |
NSN 2815-01-006-7589 is a Piston,internal Combustion Engin, manufactured by Cummins Inc., classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-01-006-7589 has 1 manufacturer part number on file: AR12358 (Cummins Inc.).
Key specifications for AR12358: Overall Height: 5.650 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0625 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM SECOND RING IN; Ring Groove Width: 0.0625 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM THIRD RING IN. 27 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.