The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-411-3883, 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 General Motors Llc Dba General Motors Llc. Government technical data includes 28 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-411-3883 |
| Primary Part Number | 3886050 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1880 INCHES NOMINAL THIRD RING IN |
| Ring Groove Width | 0.0780 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.0780 INCHES NOMINAL SECOND RING IN |
| Distance Between Pin Bosses | 1.240 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE THIRD RING |
| Diameter | 3.875 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.434 INCHES MINIMUM AND 3.444 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.434 INCHES MINIMUM AND 3.444 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 3.446 INCHES MINIMUM AND 3.456 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.637 INCHES MINIMUM AND 1.642 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT 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 | 0.9270 INCHES NOMINAL IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| Cut Depth | 1.086 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 |
|---|---|
| 291-PP20 | Hastings Manufacturing Co Div Hastings Manufacturing Company (USA) |
| 3886050 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| 403P+20 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| Reference | Meaning |
|---|---|
| 3886050 | 5/9 Secondary reference General Motors Corp |
| P536P020 | 3/2 Design control — primary reference U.S. Government activity |
| 3886050 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| L1223F020 | 3/2 Design control — primary reference U.S. Government activity |
NSN 2805-00-411-3883 is a Piston,internal Combustion Engin, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-411-3883 has 3 manufacturer part numbers on file: 291-PP20 (Hastings Manufacturing Co Div Hastings Manufacturing Company), 3886050 (General Motors Llc Dba General Motors Llc), 403P+20 (Federal-Mogul Corp Government Sales Dept).
Key specifications for 3886050: Overall Height: 3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1880 INCHES NOMINAL THIRD RING IN; Ring Groove Width: 0.0780 INCHES NOMINAL FIRST 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.