The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-735-0237, 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 28 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-735-0237 |
| Primary Part Number | 7350237 |
| 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 | GASOLINE ENGINE,NONAIRCRAFT |
| Carbon Groove | NOT INCLUDED |
| Ring Groove Width | 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM FOURTH RING IN |
| Ring Groove Width | 0.0950 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Width | 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Width | 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM THIRD RING IN |
| Retaining Ring Groove | INCLUDED |
| Surface Finish | FINISHED |
| Ring Groove Position and Quantity | NUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5 PISTON ALL RINGS |
| Supplementary Features | OIL PASSAGE HOLE AND SLOT |
| Diameter | 4.750 INCHES NOMINAL IN |
| Ring Groove Diameter | 4.217 INCHES MINIMUM AND 4.227 INCHES MAXIMUM FIRST RING IN |
| Ring Groove Diameter | 4.217 INCHES MINIMUM AND 4.227 INCHES MAXIMUM SECOND RING IN |
| Ring Groove Diameter | 4.257 INCHES MINIMUM AND 4.267 INCHES MAXIMUM FOURTH RING IN |
| Ring Groove Diameter | 4.257 INCHES MINIMUM AND 4.267 INCHES MAXIMUM THIRD RING IN |
| Distance From Pin Hole Center to Extreme Top | 3.620 INCHES MINIMUM AND 3.630 INCHES MAXIMUM IN |
| Pin | INCLUDED |
| Pin Type for Which Designed | FLOATING |
| Oil Groove | NOT INCLUDED |
| Head Style | FLAT |
| Ring Groove Quantity | 5 |
| Oversize | 0.040 INCHES NOMINAL IN |
| Skirt Bottom Cutaway Feature | NOT INCLUDED |
| Finished Size Designation | OVERSIZE |
| Ring | NOT INCLUDED |
| Surface Treatment | TIN |
| Pinhole Diameter | 1.4998 INCHES MINIMUM AND 1.5000 INCHES MAXIMUM IN |
| Pin Hole Bushing | NOT INCLUDED |
| 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 |
|---|---|
| 7350237 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 4513PF040 | 3/2 Design control — primary reference U.S. Government activity |
| TC68PF040 | 5/9 Secondary reference U.S. Government activity |
NSN 2805-00-735-0237 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 2805-00-735-0237 has 1 manufacturer part number on file: 7350237 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7350237: Overall Height: 5.938 INCHES NOMINAL IN; FSC Application Data: GASOLINE ENGINE,NONAIRCRAFT; Carbon Groove: NOT INCLUDED; Ring Groove Width: 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM FOURTH 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.