The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-024-4590, is classified within Federal Supply Class 2815 (Diesel Engines and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 25 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 | 2815-00-024-4590 |
| Primary Part Number | 1P435 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2815 / 28 — Diesel Engines and Components |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0940 INCHES NOMINAL THIRD RING IN |
| Ring Groove Width | 0.1250 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.4375 INCHES NOMINAL SECOND RING IN |
| Distance Between Pin Bosses | 2.062 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 5.375 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.688 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 4.812 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 4.875 INCHES NOMINAL THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 4.000 INCHES NOMINAL IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | RELIEVED |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 2.0000 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 |
NSN 2815-00-024-4590 is a Piston,internal Combustion Engin, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2815, Diesel Engines and Components. Status: active.
NSN 2815-00-024-4590 has 2 manufacturer part numbers on file: 1P435 (Caterpillar Inc Div Caterpillar Defense), 1P0435 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 1P435: Overall Height: 6.188 INCHES NOMINAL IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0940 INCHES NOMINAL THIRD RING IN; Ring Groove Width: 0.1250 INCHES NOMINAL FIRST RING IN. 25 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.