The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-352-3561, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Agco Corp Parts Opn. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-352-3561 |
| Primary Part Number | 4651071 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Agco Corp Parts Opn |
| Status | ACTIVE |
| FSC Application Data | ENGINE,GASOLINE,EXCEPT AIRCRAFT PRIME MOVER |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1575 INCHES MINIMUM AND 0.1585 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1580 INCHES MINIMUM AND 0.1590 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM THIRD RING IN |
| Distance Between Pin Bosses | 1.938 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Supplementary Features | OIL PASSAGE HOLE |
| Diameter | 4.500 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.045 INCHES MINIMUM AND 4.055 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Diameter | 4.085 INCHES MINIMUM AND 4.095 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 4.085 INCHES MINIMUM AND 4.095 INCHES MAXIMUM SECOND RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.679 INCHES MINIMUM AND 2.689 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Oversize | 0.020 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 1.2498 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | IRON CAST |
| 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 |
|---|---|
| 4651071 | Agco Corp Parts Opn (USA) |
| Reference | Meaning |
|---|---|
| P861P020 | 3/2 Design control — primary reference U.S. Government activity |
| P861P020 | 5/9 Secondary reference U.S. Government activity |
NSN 2805-00-352-3561 is a Piston,internal Combustion Engin, manufactured by Agco Corp Parts Opn, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-352-3561 has 1 manufacturer part number on file: 4651071 (Agco Corp Parts Opn).
Key specifications for 4651071: Overall Height: 4.750 INCHES NOMINAL IN; FSC Application Data: ENGINE,GASOLINE,EXCEPT AIRCRAFT PRIME MOVER; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1575 INCHES MINIMUM AND 0.1585 INCHES MAXIMUM SECOND 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.