The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-480-7544, 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 M & S Cartage Inc. 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through both NSN and commercial part number lookups. 15 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-480-7544 |
| Primary Part Number | 4066-040 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | M & S Cartage Inc |
| Status | ACTIVE |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Width | 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM SECOND RING IN |
| Distance Between Pin Bosses | 2.590 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Oil Passage Type | HOLE THIRD RING |
| Diameter | 3.875 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.993 INCHES MINIMUM AND 4.003 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 3.993 INCHES MINIMUM AND 4.003 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 4.025 INCHES MINIMUM AND 4.035 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.377 INCHES MINIMUM AND 2.392 INCHES MAXIMUM IN |
| Pin | NOT INCLUDED |
| Pin Type for Which Designed | LOCKING |
| Oil Groove | INCLUDED |
| Head Style | CONTOUR |
| Ring Groove Quantity | 3 |
| Oversize | 0.040 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.1090 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 |
| Part Number | Manufacturer |
|---|---|
| 4066-040 PRIMARY | M & S Cartage Inc (USA) |
| 917NP+40 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 917NPP40 PRIMARY | Hastings Manufacturing Co Div Hastings Manufacturing Company (USA) |
| Reference | Meaning |
|---|---|
| 138199R1 | 5/9 Secondary reference U.S. Government activity |
| 180476R2 | 5/9 Secondary reference U.S. Government activity |
| P7431-040 | 3/2 Design control — primary reference U.S. Government activity |
| 180476R2 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 2225PN040 | 5/9 Secondary reference Spx Corp |
| A1733NP040 | 5/9 Secondary reference U.S. Government activity |
| 138199R1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 814P040 | 3/9 Design control — primary reference U.S. Government activity |
| 180476R21 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
| 2225PN040 | 5/9 Secondary reference Bosch Automotive Service Solutions Inc. |
| L140NF040 | 3/2 Design control — primary reference U.S. Government activity |
| 180476R21 | 3/2 Design control — primary reference U.S. Government activity |
| P800X040 | 5/9 Secondary reference Mcquay-Norris Inc Oem Div an Skf Industries Co |
| 814P040 | 5/9 Secondary reference Nylen Products Inc |
| 1600P040 | 5/9 Secondary reference Dana Corp Engine Products Div |
NSN 2805-00-480-7544 is a Piston,internal Combustion Engin, manufactured by M & S Cartage Inc, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-480-7544 has 3 manufacturer part numbers on file: 4066-040 (M & S Cartage Inc), 917NP+40 (Federal-Mogul Corp Government Sales Dept), 917NPP40 (Hastings Manufacturing Co Div Hastings Manufacturing Company).
Key specifications for 4066-040: Overall Height: 4.237 INCHES MINIMUM AND 4.252 INCHES MAXIMUM IN; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN; Ring Groove Width: 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM FIRST 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.