The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-375-8770, 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 26 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-375-8770 |
| Primary Part Number | 6270033 |
| 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 | INCLUDED |
| Ring Groove Width | 0.0930 INCHES NOMINAL FIRST RING IN |
| Ring Groove Width | 0.0930 INCHES NOMINAL SECOND RING IN |
| Ring Groove Width | 0.1870 INCHES NOMINAL THIRD RING IN |
| Distance Between Pin Bosses | 1.046 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | SLOT LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 3.875 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.500 INCHES NOMINAL FIRST RING IN |
| Ring Groove Diameter | 3.500 INCHES NOMINAL SECOND RING IN |
| Ring Groove Diameter | 3.500 INCHES NOMINAL THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.687 INCHES NOMINAL IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | INCLUDED |
| Head Style | CONTOUR |
| Ring Groove Quantity | 3 |
| Skirt Bottom Cutaway Feature | INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Pinhole Diameter | 0.9370 INCHES NOMINAL IN |
| Pin Hole Bushing | INCLUDED |
| Material | ALUMINUM ALLOY |
| Skirt Type | SOLID |
| Cut Depth | 0.875 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 |
|---|---|
| 6270033 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 6270033 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 6270033 | 5/9 Secondary reference General Motors Corp |
| 1658P | 5/9 Secondary reference Echlin Inc |
NSN 2805-00-375-8770 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 2805-00-375-8770 has 1 manufacturer part number on file: 6270033 (General Motors Llc Dba General Motors Llc).
Key specifications for 6270033: Overall Height: 3.295 INCHES NOMINAL IN; Carbon Groove: INCLUDED; Ring Groove Width: 0.0930 INCHES NOMINAL FIRST RING IN; Ring Groove Width: 0.0930 INCHES NOMINAL SECOND RING IN. 26 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.