The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-753-8294, 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 26 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 14 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-753-8294 |
| Primary Part Number | 494B |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | M & S Cartage Inc |
| Status | ACTIVE |
| FSC Application Data | GASOLINE ENGINE,NONAIRCRAFT |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1880 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM SECOND RING IN |
| Distance Between Pin Bosses | 1.500 INCHES NOMINAL IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Skirt Slot Style | BASE TO GROOVE SLOT |
| Oil Passage Type | SLOT LOCATION NOT OTHERWISE SPECIFIED |
| Diameter | 3.777 INCHES NOMINAL IN |
| Ring Groove Diameter | 3.368 INCHES MINIMUM AND 3.378 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 3.408 INCHES MINIMUM AND 3.418 INCHES MAXIMUM FIRST RING IN |
| Distance From Pin Hole Center to Extreme Top | 2.887 INCHES MINIMUM AND 2.903 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 4 |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | STANDARD |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 0.9896 INCHES MINIMUM AND 0.9898 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| Material | ALUMINUM |
| Skirt Type | SEMISPLIT |
| 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 |
|---|---|
| 494B PRIMARY | M & S Cartage Inc (USA) |
| 7538294 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 764P | 5/9 Secondary reference Echlin Inc |
| 133AP | 3/9 Design control — primary reference U.S. Government activity |
| 500P | 5/9 Secondary reference Hansen Mfg Co Inc |
| 133AP | 5/9 Secondary reference Nylen Products Inc |
| P1309 | 3/2 Design control — primary reference U.S. Government activity |
| 764P | 5/9 Secondary reference Dana Corp Engine Products Div |
| P335ARX | 5/9 Secondary reference Mcquay-Norris Inc Oem Div an Skf Industries Co |
| 1688PX | C/1 Advisory reference — outside the item-of-supply concept Bosch Automotive Service Solutions Inc. |
| L125F | 3/2 Design control — primary reference U.S. Government activity |
| TC60N | 3/2 Design control — primary reference U.S. Government activity |
| 2135472 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| TC60STDPF | 5/9 Secondary reference Dana Corp Engine Products Div |
| 2135472 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 1688PX | 5/9 Secondary reference Spx Corp |
NSN 2805-00-753-8294 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 2805-00-753-8294 has 2 manufacturer part numbers on file: 494B (M & S Cartage Inc), 7538294 (U S Army Tank Automotive Command Amsta-Im-Mm).
5 possible matches (shared part number, not a government interchangeability claim): 3895-01-200-8449, 3770-01-216-1823, 3895-01-470-6546. Verify interchangeability with system specifications before substitution.
Key specifications for 494B: Overall Height: 4.724 INCHES MINIMUM AND 4.754 INCHES MAXIMUM IN; FSC Application Data: GASOLINE ENGINE,NONAIRCRAFT; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM FIRST 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.