The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-574-9083, 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 Federal-Mogul Corp Government Sales Dept. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-574-9083 |
| Primary Part Number | 1061P+20 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Federal-Mogul Corp Government Sales Dept |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.0790 INCHES MINIMUM AND 0.0800 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.0790 INCHES MINIMUM AND 0.0800 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1870 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN |
| Distance Between Pin Bosses | 1.440 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Diameter | 3.910 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.461 INCHES MINIMUM AND 3.471 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.461 INCHES MINIMUM AND 3.471 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 3.475 INCHES MINIMUM AND 3.485 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.808 INCHES MINIMUM AND 1.813 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | LOCKING |
| Oil Groove | INCLUDED |
| Head Style | CONCAVE |
| Ring Groove Quantity | 3 |
| Oversize | 0.020 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 0.9840 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SOLID |
| Cut Depth | 0.340 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1061P+20 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 1881660 PRIMARY | Chrysler Realty Company Llc Dba Daimler Chrysler (USA) |
| 1061P20 PRIMARY | Hastings Manufacturing Co Div Hastings Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| P270-020 | 3/2 Design control — primary reference U.S. Government activity |
| 1961PX020 | 5/9 Secondary reference Spx Corp |
| L2097F020 | 3/2 Design control — primary reference U.S. Government activity |
| TC222-020 | 3/2 Design control — primary reference U.S. Government activity |
| 1961PX020 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| 1396P020 | 5/9 Secondary reference Dana Corp Engine Products Div |
| P737AX020 | 5/9 Secondary reference Mcquay-Norris Inc Oem Div an Skf Industries Co |
NSN 2805-00-574-9083 is a Piston,internal Combustion Engin, manufactured by Federal-Mogul Corp Government Sales Dept, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-574-9083 has 3 manufacturer part numbers on file: 1061P+20 (Federal-Mogul Corp Government Sales Dept), 1881660 (Chrysler Realty Company Llc Dba Daimler Chrysler), 1061P20 (Hastings Manufacturing Co Div Hastings Manufacturing Company).
1 possible match (shared part number, not a government interchangeability claim): 6220-01-386-5150. Verify interchangeability with system specifications before substitution.
Key specifications for 1061P+20: Overall Height: 3.206 INCHES MINIMUM AND 3.216 INCHES MAXIMUM IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.0790 INCHES MINIMUM AND 0.0800 INCHES MAXIMUM FIRST RING IN; Ring Groove Width: 0.0790 INCHES MINIMUM AND 0.0800 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.