The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-709-7825, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 27 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-709-7825 |
| Primary Part Number | 7097825 |
| Item Name | Piston,internal Combustion Engin |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| FSC Application Data | ENGINE GASOLINE,CARRIER CARGO |
| Carbon Groove | INCLUDED |
| Ring Groove Width | 0.0960 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.1260 INCHES MINIMUM AND 0.1270 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.1560 INCHES MINIMUM AND 0.1570 INCHES MAXIMUM THIRD RING IN |
| Distance Between Pin Bosses | 1.062 INCHES NOMINAL IN |
| Retaining Ring Groove | NOT INCLUDED |
| Surface Finish | FINISHED |
| Diameter | 3.000 INCHES NOMINAL IN |
| Ring Groove Diameter | 2.642 INCHES MINIMUM AND 2.652 INCHES MAXIMUM THIRD RING IN |
| Ring Groove Diameter | 2.652 INCHES MINIMUM AND 2.662 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 2.682 INCHES MINIMUM AND 2.692 INCHES MAXIMUM SECOND RING IN |
| Distance From Pin Hole Center to Extreme Top | 1.591 INCHES MINIMUM AND 1.597 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 3 |
| Oversize | 0.020 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 0.7492 INCHES MINIMUM AND 0.7496 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 |
|---|---|
| 7097825 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| B518-020 | 5/9 Secondary reference U.S. Government activity |
| 512414 | 3/9 Design control — primary reference Sasco Inc Canadian Div |
NSN 2805-00-709-7825 is a Piston,internal Combustion Engin, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-709-7825 has 1 manufacturer part number on file: 7097825 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-613-5367. Verify interchangeability with system specifications before substitution.
Key specifications for 7097825: Overall Height: 2.906 INCHES NOMINAL IN; FSC Application Data: ENGINE GASOLINE,CARRIER CARGO; Carbon Groove: INCLUDED; Ring Groove Width: 0.0960 INCHES MINIMUM AND 0.0970 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.